sass:color

Compatibility:
Dart Sass
since 1.23.0
LibSass
✗
Ruby Sass
✗

Only Dart Sass currently supports loading built-in modules with @use. Users of other implementations must call functions using their global names instead.

color.adjust($color,
  $red: null, $green: null, $blue: null,
  $hue: null, $saturation: null, $lightness: null,
  $whiteness: null, $blackness: null,
  $x: null, $y: null, $z: null,
  $chroma: null,
  $alpha: null,
  $space: null)
adjust-color(...) //=> color
Compatibility ($x, $y, $z, $chroma, and $space):
Dart Sass
since 1.79.0
LibSass
✗
Ruby Sass
✗
Compatibility ($whiteness and $blackness):
Dart Sass
since 1.28.0
LibSass
✗
Ruby Sass
✗

Increases or decreases one or more channels of $color by fixed amounts.

Adds the value passed for each keyword argument to the corresponding channel of the color, and returns the adjusted color. By default, this can only adjust channels in $color’s space, but a different color space can be passed as $space to adjust channels there instead. This always returns a color in the same space as $color.

For historical reasons, if $color is in a legacy color space, any legacy color space channels can be adjusted. However, it’s an error to specify an RGB channel ($red, $green, and/or $blue) at the same time as an HSL channel ($hue, $saturation, and/or $lightness), or either of those at the same time as an HWB channel ($hue, $whiteness, and/or $blackness).

Even so, it’s a good idea to pass $space explicitly even for legacy colors.

All channel arguments must be numbers, and must be units that could be passed for those channels in the color space’s constructor. If the existing channel value plus the adjustment value is outside the channel’s native range, it’s clamped for:

  • red, green, and blue channels for the rgb space;
  • lightness channel for the lab, lch, oklab, and oklch spaces;
  • the lower bound of the saturation and chroma channels for the hsl, lch, and oklch spaces;
  • and the alpha channel for all spaces.

See also:

@use 'sass:color';

@debug color.adjust(#6b717f, $red: 15); // #7a717f
@debug color.adjust(lab(40% 30 40), $lightness: 10%, $a: -20); // lab(50% 10 40)
@debug color.adjust(#d2e1dd, $hue: 45deg, $space: oklch);
// rgb(209.7987626149, 223.8632000471, 229.3988769575)
// SASS
@use 'sass:color'

@debug color.adjust(#6b717f, $red: 15)  // #7a717f
@debug color.adjust(lab(40% 30 40), $lightness: 10%, $a: -20)  // lab(50% 10 40)
@debug color.adjust(#d2e1dd, $hue: 45deg, $space: oklch)
// rgb(209.7987626149, 223.8632000471, 229.3988769575)
color.change($color,
  $red: null, $green: null, $blue: null,
  $hue: null, $saturation: null, $lightness: null,
  $whiteness: null, $blackness: null,
  $x: null, $y: null, $z: null,
  $chroma: null,
  $alpha: null,
  $space: null)
change-color(...) //=> color
Compatibility ($x, $y, $z, $chroma, and $space):
Dart Sass
since 1.79.0
LibSass
✗
Ruby Sass
✗
Compatibility ($whiteness and $blackness):
Dart Sass
since 1.28.0
LibSass
✗
Ruby Sass
✗

Sets one or more channels of a color to new values.

Uses the value passed for each keyword argument in place of the corresponding color channel, and returns the changed color. By default, this can only change channels in $color’s space, but a different color space can be passed as $space to adjust channels there instead. This always returns a color in the same space as $color.

For historical reasons, if $color is in a legacy color space, any legacy color space channels can be changed. However, it’s an error to specify an RGB channel ($red, $green, and/or $blue) at the same time as an HSL channel ($hue, $saturation, and/or $lightness), or either of those at the same time as an HWB channel ($hue, $whiteness, and/or $blackness).

Even so, it’s a good idea to pass $space explicitly even for legacy colors.

All channel arguments must be numbers, and must be units that could be passed for those channels in the color space’s constructor. Channels are never clamped for color.change().

See also:

@use 'sass:color';

@debug color.change(#6b717f, $red: 100); // #64717f
@debug color.change(color(srgb 0 0.2 0.4), $red: 0.8, $blue: 0.1);
// color(srgb 0.8 0.2 0.1)
@debug color.change(#998099, $lightness: 30%, $space: oklch);
// rgb(58.0719961509, 37.2631531594, 58.4201613409)
// SASS
@use 'sass:color'

@debug color.change(#6b717f, $red: 100)  // #64717f
@debug color.change(color(srgb 0 0.2 0.4), $red: 0.8, $blue: 0.1)
// color(srgb 0.8 0.2 0.1)
@debug color.change(#998099, $lightness: 30%, $space: oklch)
// rgb(58.0719961509, 37.2631531594, 58.4201613409)
color.channel($color, $channel, $space: null) //=> number
Compatibility ($space):
Dart Sass
since 1.79.0
LibSass
✗
Ruby Sass
✗

Returns the value of $channel in $space, which defaults to $color’s space. The $channel must be a quoted string, and the $space must be an unquoted string.

This returns a number with unit deg for the hue channel of the hsl, hwb, lch, and oklch spaces. It returns a number with unit % for the saturation, lightness, whiteness, and blackness channels of the hsl, hwb, lab, lch, oklab, and oklch spaces. For all other channels, it returns a unitless number.

This will return 0 (possibly with an appropriate unit) if the $channel is missing in $color. You can use color.is-missing() to check explicitly for missing channels.

@use 'sass:color';

@debug color.channel(hsl(80deg 30% 50%), "hue"); // 80deg
@debug color.channel(hsl(80deg 30% 50%), "hue", $space: oklch); // 124.279238779deg
@debug color.channel(hsl(80deg 30% 50%), "red", $space: rgb); // 140.25
// SASS
@use 'sass:color'

@debug color.channel(hsl(80deg 30% 50%), "hue")  // 80deg
@debug color.channel(hsl(80deg 30% 50%), "hue", $space: oklch)  // 124.279238779deg
@debug color.channel(hsl(80deg 30% 50%), "red", $space: rgb)  // 140.25
color.complement($color, $space: null)
complement($color, $space: null) //=> color
Compatibility ($space):
Dart Sass
since 1.79.0
LibSass
✗
Ruby Sass
✗

Returns the complement of $color in $space.

This rotates $color’s hue by 180deg in $space. This means that $space has to be a polar color space: hsl, hwb, lch, or oklch. It always returns a color in the same space as $color.

For historical reasons, $space is optional if $color is in a legacy color space. In that case, $space defaults to hsl. It’s always a good idea to pass $space explicitly regardless.

@use 'sass:color';

// HSL hue 222deg becomes 42deg.
@debug color.complement(#6b717f); // #7f796b

// Oklch hue 267.1262408996deg becomes 87.1262408996deg
@debug color.complement(#6b717f, oklch);
// rgb(118.8110604298, 112.5123650034, 98.1616586336)

// Hue 70deg becomes 250deg.
@debug color.complement(oklch(50% 0.12 70deg), oklch); // oklch(50% 0.12 250deg)
// SASS
@use 'sass:color'

// HSL hue 222deg becomes 42deg.
@debug color.complement(#6b717f)  // #7f796b

// Oklch hue 267.1262408996deg becomes 87.1262408996deg
@debug color.complement(#6b717f, oklch) 
// rgb(118.8110604298, 112.5123650034, 98.1616586336)

// Hue 70deg becomes 250deg.
@debug color.complement(oklch(50% 0.12 70deg), oklch)  // oklch(50% 0.12 250deg)
color.grayscale($color)
grayscale($color) //=> color

Returns a gray color with the same lightness as $color.

If $color is in a legacy color space, this sets the HSL saturation to 0%. Otherwise, it sets the Oklch chroma to 0%.

@use 'sass:color';

@debug color.grayscale(#6b717f); // #757575
@debug color.grayscale(color(srgb 0.4 0.2 0.6)); // color(srgb 0.3233585271 0.3233585411 0.3233585792)
@debug color.grayscale(oklch(50% 80% 270deg)); // oklch(50% 0% 270deg)
// SASS
@use 'sass:color'

@debug color.grayscale(#6b717f)  // #757575
@debug color.grayscale(color(srgb 0.4 0.2 0.6))  // color(srgb 0.3233585271 0.3233585411 0.3233585792)
@debug color.grayscale(oklch(50% 80% 270deg))  // oklch(50% 0% 270deg)
color.ie-hex-str($color)
ie-hex-str($color) //=> unquoted string

Returns an unquoted string that represents $color in the #AARRGGBB format expected by Internet Explorer’s -ms-filter property.

If $color isn’t already in the rgb color space, it’s converted to rgb and gamut-mapped if necessary. The specific gamut-mapping algorithm may change in future Sass versions as the state of the art improves; currently, local-minde is used.

@use 'sass:color';

@debug color.ie-hex-str(#b37399); // #FFB37399
@debug color.ie-hex-str(rgba(242, 236, 228, 0.6)); // #99F2ECE4
@debug color.ie-hex-str(oklch(70% 10% 120deg)); // #FF9BA287
// SASS
@use 'sass:color'

@debug color.ie-hex-str(#b37399)  // #FFB37399
@debug color.ie-hex-str(rgba(242, 236, 228, 0.6))  // #99F2ECE4
@debug color.ie-hex-str(oklch(70% 10% 120deg))  // #FF9BA287
color.invert($color, $weight: 100%, $space: null)
invert($color, $weight: 100%, $space: null) //=> color
Compatibility ($space):
Dart Sass
since 1.79.0
LibSass
✗
Ruby Sass
✗

Returns the inverse or negative of $color in $space.

The $weight must be a number between 0% and 100% (inclusive). A higher weight means the result will be closer to the negative, and a lower weight means it will be closer to $color. Weight 50% will always produce a medium-lightness gray in $space.

For historical reasons, $space is optional if $color is in a legacy color space. In that case, $space defaults to $color’s own space. It’s always a good idea to pass $space explicitly regardless.

@use 'sass:color';

@debug color.invert(#b37399, $space: rgb); // #4c8c66
@debug color.invert(#550e0c, 20%, $space: display-p3); // rgb(103.4937692017, 61.3720912206, 59.430641338)
// SASS
@use 'sass:color';

@debug color.invert(#b37399, $space: rgb)  // #4c8c66
@debug color.invert(#550e0c, 20%, $space: display-p3)  // rgb(103.4937692017, 61.3720912206, 59.430641338)
color.is-legacy($color) //=> boolean
Compatibility ($space):
Dart Sass
since 1.79.0
LibSass
✗
Ruby Sass
✗

Returns whether $color is in a legacy color space.

@use 'sass:color';

@debug color.is-legacy(#b37399); // true
@debug color.is-legacy(hsl(90deg 30% 90%)); // true
@debug color.is-legacy(oklch(70% 10% 120deg)); // false
// SASS
@use 'sass:color'

@debug color.is-legacy(#b37399)  // true
@debug color.is-legacy(hsl(90deg 30% 90%))  // true
@debug color.is-legacy(oklch(70% 10% 120deg))  // false
color.is-missing($color, $channel) //=> boolean
Compatibility ($space):
Dart Sass
since 1.79.0
LibSass
✗
Ruby Sass
✗

Returns whether $channel is missing in $color. The $channel must be a quoted string.

@use 'sass:color';

@debug color.is-missing(#b37399, "green"); // false
@debug color.is-missing(rgb(100 none 200), "green"); // true
@debug color.is-missing(color.to-space(grey, lch), "hue"); // true
// SASS
@use 'sass:color'

@debug color.is-legacy(#b37399)  // true
@debug color.is-legacy(hsl(90deg 30% 90%))  // true
@debug color.is-legacy(oklch(70% 10% 120deg))  // false
color.is-powerless($color, $channel, $space: null) //=> boolean
Compatibility ($space):
Dart Sass
since 1.79.0
LibSass
✗
Ruby Sass
✗

Returns whether $color’s $channel is powerless in $space, which defaults to $color’s space. The $channel must be a quoted string and the $space must be an unquoted string.

Channels are considered powerless in the following circumstances:

  • In the hsl space, the hue is powerless if the saturation is 0%.
  • In the hwb space, the hue is powerless if the whiteness plus the blackness is greater than 100%.
  • In the lch and oklch spaces, the hue is powerless if the chroma is 0%.
@use 'sass:color';

@debug color.is-powerless(hsl(180deg 0% 40%), "hue"); // true
@debug color.is-powerless(hsl(180deg 0% 40%), "saturation"); // false
@debug color.is-powerless(#999, "hue", $space: hsl); // true
// SASS
@use 'sass:color'

@debug color.is-powerless(hsl(180deg 0% 40%), "hue")  // true
@debug color.is-powerless(hsl(180deg 0% 40%), "saturation")  // false
@debug color.is-powerless(#999, "hue", $space: hsl)  // true
color.mix($color1, $color2, $weight: 50%, $method: null)
mix($color1, $color2, $weight: 50%, $method: null) //=> color
Compatibility ($method):
Dart Sass
since 1.79.0
LibSass
✗
Ruby Sass
✗

Returns a color that’s a mixture of $color1 and $color2 using $method, which is the name of a color space, optionally followed by a hue interpolation method if it’s a polar color space (hsl, hwb, lch, or oklch).

This uses the same algorithm to mix colors as the CSS color-mix() function. This also means that if either color has a missing channel in the interpolation space, it will take on the corresponding channel value from the other color. This always returns a color in $color1’s space.

The $weight must be a number between 0% and 100% (inclusive). A larger weight indicates that more of $color1 should be used, and a smaller weight indicates that more of $color2 should be used.

For historical reasons, $method is optional if $color1 and $color2 are both in legacy color spaces. In this case, color mixing is done using the same algorithm that Sass used historically, in which both the $weight and the relative opacity of each color determines how much of each color is in the result.

@use 'sass:color';

@debug color.mix(#036, #d2e1dd, $method: rgb); // #698aa2
@debug color.mix(#036, #d2e1dd, $method: oklch); // rgb(87.864037264, 140.601918773, 154.2876826946)
@debug color.mix(
  color(rec2020 1 0.7 0.1),
  color(rec2020 0.8 none 0.3),
  $weight: 75%,
  $method: rec2020
); // color(rec2020 0.95 0.7 0.15)
@debug color.mix(
  oklch(80% 20% 0deg),
  oklch(50% 10% 120deg),
  $method: oklch longer hue
); // oklch(65% 0.06 240deg)
// SASS
@use 'sass:color';

@debug color.mix(#036, #d2e1dd, $method: rgb)  // #698aa2
@debug color.mix(#036, #d2e1dd, $method: oklch)  // rgb(87.864037264, 140.601918773, 154.2876826946)
@debug color.mix(color(rec2020 1 0.7 0.1), color(rec2020 0.8 none 0.3), $weight: 75%, $method: rec2020)  // color(rec2020 0.95 0.7 0.15)





@debug color.mix(oklch(80% 20% 0deg), oklch(50% 10% 120deg), $method: oklch longer hue)  // oklch(65% 0.06 240deg)
color.same($color1, $color2) //=> boolean
Compatibility:
Dart Sass
since 1.79.0
LibSass
✗
Ruby Sass
✗

Returns whether $color1 and $color2 visually render as the same color. Unlike ==, this considers colors to be equivalent even if they’re in different color spaces as long as they represent the same color value in the xyz color space. This treats missing channels as equivalent to zero.

@use 'sass:color';

@debug color.same(#036, #036); // true
@debug color.same(#036, #037); // false
@debug color.same(#036, color.to-space(#036, oklch)); // true
@debug color.same(hsl(none 50% 50%), hsl(0deg 50% 50%)); // true
// SASS
@use 'sass:color'

@debug color.same(#036, #036)  // true
@debug color.same(#036, #037)  // false
@debug color.same(#036, color.to-space(#036, oklch))  // true
@debug color.same(hsl(none 50% 50%), hsl(0deg 50% 50%))  // true
color.scale($color,
  $red: null, $green: null, $blue: null,
  $saturation: null, $lightness: null,
  $whiteness: null, $blackness: null,
  $x: null, $y: null, $z: null,
  $chroma: null,
  $alpha: null,
  $space: null)
scale-color(...) //=> color
Compatibility ($x, $y, $z, $chroma, and $space):
Dart Sass
since 1.79.0
LibSass
✗
Ruby Sass
✗
Compatibility ($whiteness and $blackness):
Dart Sass
since 1.28.0
LibSass
✗
Ruby Sass
✗

Fluidly scales one or more properties of $color.

Each keyword argument must be a number between -100% and 100% (inclusive). This indicates how far the corresponding property should be moved from its original position towards the maximum (if the argument is positive) or the minimum (if the argument is negative). This means that, for example, $lightness: 50% will make all colors 50% closer to maximum lightness without making them fully white. By default, this can only scale colors in $color’s space, but a different color space can be passed as $space to scale channels there instead. This always returns a color in the same space as $color.

For historical reasons, if $color is in a legacy color space, any legacy color space channels can be scaled. However, it’s an error to specify an RGB channel ($red, $green, and/or $blue) at the same time as an HSL channel ($saturation, and/or $lightness), or either of those at the same time as an HWB channel ($hue, $whiteness, and/or $blackness).

Even so, it’s a good idea to pass $space explicitly even for legacy colors.

See also:

@use 'sass:color';

@debug color.scale(#6b717f, $red: 15%); // rgb(129.2, 113, 127)
@debug color.scale(#d2e1dd, $lightness: -10%, $space: oklch);
// rgb(181.2580722731, 195.8949200496, 192.0059024063)
@debug color.scale(oklch(80% 20% 120deg), $chroma: 50%, $alpha: -40%);
// oklch(80% 0.24 120deg / 0.6)
// SASS
@use 'sass:color'

@debug color.scale(#6b717f, $red: 15%)  // rgb(129.2, 113, 127)
@debug color.scale(#d2e1dd, $lightness: -10%, $space: oklch)
// rgb(181.2580722731, 195.8949200496, 192.0059024063)
@debug color.scale(oklch(80% 20% 120deg), $chroma: 50%, $alpha: -40%)
// oklch(80% 0.24 120deg / 0.6)
color.space($color) //=> unquoted string
Compatibility:
Dart Sass
since 1.79.0
LibSass
✗
Ruby Sass
✗

Returns the name of $color’s space as an unquoted string.

@use 'sass:color';

@debug color.space(#036); // rgb
@debug color.space(hsl(120deg 40% 50%)); // hsl
@debug color.space(color(xyz-d65 0.1 0.2 0.3)); // xyz
// SASS
@use 'sass:color'

@debug color.space(#036)  // rgb
@debug color.space(hsl(120deg 40% 50%))  // hsl
@debug color.space(color(xyz-d65 0.1 0.2 0.3))  // xyz
color.to-gamut($color, $space: null, $method: null) //=> color
Compatibility:
Dart Sass
since 1.79.0
LibSass
✗
Ruby Sass
✗

Returns a visually similar color to $color in the gamut of $space, which defaults to $color’s space. If $color is already in-gamut for $space, it’s returned as-is. This always returns a color in $color’s original space. The $space must be an unquoted string.

The $method indicates how Sass should choose a "similar" color:

  • local-minde: This is the method currently recommended by the CSS Colors 4 specification. It binary searches the Oklch chroma space of the color until it finds a color whose clipped-to-gamut value is as close as possible to the reduced-chroma variant.

  • clip: This simply clips all channels to within $space’s gamut, setting them to the minimum or maximum gamut values if they’re out-of-gamut.

The CSS working group and browser vendors are still actively discussing alternative options for a recommended gamut-mapping algorithm. Until they settle on a recommendation, the $method parameter is mandatory in color.to-gamut() so that we can eventually make its default value the same as the CSS default.

@use 'sass:color';

@debug color.to-gamut(#036, $method: local-minde); // #036
@debug color.to-gamut(oklch(60% 70% 20deg), $space: rgb, $method: local-minde);
// oklch(61.2058838235% 0.2466052584 22.0773325274deg)
@debug color.to-gamut(oklch(60% 70% 20deg), $space: rgb, $method: clip);
// oklch(62.5026609544% 0.2528579741 24.1000466758deg)
// SASS
@use 'sass:color'

@debug color.to-gamut(#036, $method: local-minde)  // #036
@debug color.to-gamut(oklch(60% 70% 20deg), $space: rgb, $method: local-minde)
// oklch(61.2058838235% 0.2466052584 22.0773325274deg)
@debug color.to-gamut(oklch(60% 70% 20deg), $space: rgb, $method: clip)
// oklch(62.5026609544% 0.2528579741 24.1000466758deg)
color.to-space($color, $space) //=> color
Compatibility:
Dart Sass
since 1.79.0
LibSass
✗
Ruby Sass
✗

Converts $color into the given $space, which must be an unquoted string.

If the gamut of $color’s original space is wider than $space’s gamut, this may return a color that’s out-of-gamut for the $space. You can convert it to a similar in-gamut color using color.to-gamut().

This can produce colors with missing channels, either if $color has an analogous channel that’s missing, or if the channel is powerless in the destination space. In order to ensure that converting to legacy color spaces always produces a color that’s compatible with older browsers, if $space is legacy this will never return a new missing channel.

💡 Fun fact:

This is the only Sass function that returns a color in a different space than the one passed in.

@use 'sass:color';

@debug color.to-space(#036, display-p3); // lch(20.7457453073% 35.0389733355 273.0881809283deg)
@debug color.to-space(oklab(44% 0.09 -0.13)); // rgb(103.1328911972, 50.9728091281, 150.8382311692)
@debug color.to-space(xyz(0.8 0.1 0.1)); // color(a98-rgb 1.2177586808 -0.7828263424 0.3516847577)
@debug color.to-space(grey, lch); // lch(53.5850134522% 0 none)
@debug color.to-space(lch(none 10% 30deg), oklch); // oklch(none 0.3782382429 11.1889160032deg)
// SASS
@use 'sass:color'

@debug color.to-space(#036, display-p3)  // lch(20.7457453073% 35.0389733355 273.0881809283deg)
@debug color.to-space(oklab(44% 0.09 -0.13))  // rgb(103.1328911972, 50.9728091281, 150.8382311692)
@debug color.to-space(xyz(0.8 0.1 0.1))  // color(a98-rgb 1.2177586808 -0.7828263424 0.3516847577)
@debug color.to-space(grey, lch)  // lch(53.5850134522% 0 none)
@debug color.to-space(lch(none 10% 30deg), oklch)  // oklch(none 0.3782382429 11.1889160032deg)

Deprecated Functions 

adjust-hue($color, $degrees) //=> color

Increases or decreases $color’s HSL hue.

The $hue must be a number between -360deg and 360deg (inclusive) to add to $color’s hue. It may be unitless or have any angle unit. The $color must be in a legacy color space.

See also color.adjust(), which can adjust any property of a color.

Because adjust-hue() is redundant with color.adjust(), it’s not included directly in the new module system. Instead of adjust-hue($color, $amount), you can write color.adjust($color, $hue: $amount, $space: hsl).

// Hue 222deg becomes 282deg.
@debug adjust-hue(#6b717f, 60deg); // #796b7f

// Hue 164deg becomes 104deg.
@debug adjust-hue(#d2e1dd, -60deg); // #d6e1d2

// Hue 210deg becomes 255deg.
@debug adjust-hue(#036, 45); // #1a0066
// SASS
// Hue 222deg becomes 282deg.
@debug adjust-hue(#6b717f, 60deg)  // #796b7f

// Hue 164deg becomes 104deg.
@debug adjust-hue(#d2e1dd, -60deg)  // #d6e1d2

// Hue 210deg becomes 255deg.
@debug adjust-hue(#036, 45)  // #1a0066
color.alpha($color)
alpha($color)
opacity($color) //=> number

Returns the alpha channel of $color as a number between 0 and 1.

The $color must be in a legacy color space.

As a special case, this supports the Internet Explorer syntax alpha(opacity=20), for which it returns an unquoted string.

Because color.alpha() is redundant with color.channel(), it’s no longer recommended. Instead of color.alpha($color), you can write color.channel($color, "alpha").

@use 'sass:color';

@debug color.alpha(#e1d7d2); // 1
@debug color.opacity(rgb(210, 225, 221, 0.4)); // 0.4
@debug alpha(opacity=20); // alpha(opacity=20)
// SASS
@use 'sass:color'

@debug color.alpha(#e1d7d2)  // 1
@debug color.opacity(rgb(210, 225, 221, 0.4))  // 0.4
@debug alpha(opacity=20)  // alpha(opacity=20)
color.blackness($color)
blackness($color) //=> number
Compatibility:
Dart Sass
since 1.28.0
LibSass
✗
Ruby Sass
✗

Returns the HWB blackness of $color as a number between 0% and 100%.

The $color must be in a legacy color space.

Because color.blackness() is redundant with color.channel(), it’s no longer recommended. Instead of color.blackness($color), you can write color.channel($color, "blackness").

@use 'sass:color';

@debug color.blackness(#e1d7d2); // 11.7647058824%
@debug color.blackness(white); // 0%
@debug color.blackness(black); // 100%
// SASS
@use 'sass:color'

@debug color.blackness(#e1d7d2)  // 11.7647058824%
@debug color.blackness(white)  // 0%
@debug color.blackness(black)  // 100%
color.blue($color)
blue($color) //=> number

Returns the blue channel of $color as a number between 0 and 255.

The $color must be in a legacy color space.

Because color.blue() is redundant with color.channel(), it’s no longer recommended. Instead of color.blue($color), you can write color.channel($color, "blue").

@use 'sass:color';

@debug color.blue(#e1d7d2); // 210
@debug color.blue(white); // 255
@debug color.blue(black); // 0
// SASS
@use 'sass:color'

@debug color.blue(#e1d7d2)  // 210
@debug color.blue(white)  // 255
@debug color.blue(black)  // 0
darken($color, $amount) //=> color

Makes $color darker.

The $color must be in a legacy color space.

The $amount must be a number between 0% and 100% (inclusive). Decreases the HSL lightness of $color by that amount.

The darken() function decreases lightness by a fixed amount, which is often not the desired effect. To make a color a certain percentage darker than it was before, use color.scale() instead.

Because darken() is usually not the best way to make a color darker, it’s not included directly in the new module system. However, if you have to preserve the existing behavior, darken($color, $amount) can be written color.adjust($color, $lightness: -$amount, $space: hsl).

@use 'sass:color';

// #036 has lightness 20%, so when darken() subtracts 30% it just returns black.
@debug darken(#036, 30%); // black

// scale() instead makes it 30% darker than it was originally.
@debug color.scale(#036, $lightness: -30%); // #002447
// SASS
@use 'sass:color'

// #036 has lightness 20%, so when darken() subtracts 30% it just returns black.
@debug darken(#036, 30%)  // black

// scale() instead makes it 30% darker than it was originally.
@debug color.scale(#036, $lightness: -30%)  // #002447
// Lightness 92% becomes 72%.
@debug darken(#b37399, 20%); // #7c4465

// Lightness 85% becomes 45%.
@debug darken(#f2ece4, 40%); // #b08b5a

// Lightness 20% becomes 0%.
@debug darken(#036, 30%); // black
// SASS
// Lightness 92% becomes 72%.
@debug darken(#b37399, 20%)  // #7c4465

// Lightness 85% becomes 45%.
@debug darken(#f2ece4, 40%)  // #b08b5a

// Lightness 20% becomes 0%.
@debug darken(#036, 30%)  // black
desaturate($color, $amount) //=> color

Makes $color less saturated.

The $color must be in a legacy color space.

The $amount must be a number between 0% and 100% (inclusive). Decreases the HSL saturation of $color by that amount.

The desaturate() function decreases saturation by a fixed amount, which is often not the desired effect. To make a color a certain percentage less saturated than it was before, use color.scale() instead.

Because desaturate() is usually not the best way to make a color less saturated, it’s not included directly in the new module system. However, if you have to preserve the existing behavior, desaturate($color, $amount) can be written color.adjust($color, $saturation: -$amount, $space: hsl).

@use 'sass:color';

// #d2e1dd has saturation 20%, so when desaturate() subtracts 30% it just
// returns gray.
@debug desaturate(#d2e1dd, 30%); // #dadada

// scale() instead makes it 30% less saturated than it was originally.
@debug color.scale(#6b717f, $saturation: -30%); // #6e727c
// SASS
@use 'sass:color'

// #6b717f has saturation 20%, so when desaturate() subtracts 30% it just
// returns gray.
@debug desaturate(#d2e1dd, 30%)  // #dadada

// scale() instead makes it 30% less saturated than it was originally.
@debug color.scale(#6b717f, $saturation: -30%)  // #6e727c
// Saturation 100% becomes 80%.
@debug desaturate(#036, 20%); // #0a335c

// Saturation 35% becomes 15%.
@debug desaturate(#f2ece4, 20%); // #eeebe8

// Saturation 20% becomes 0%.
@debug desaturate(#d2e1dd, 30%); // #dadada
// SASS
// Saturation 100% becomes 80%.
@debug desaturate(#036, 20%)  // #0a335c

// Saturation 35% becomes 15%.
@debug desaturate(#f2ece4, 20%)  // #eeebe8

// Saturation 20% becomes 0%.
@debug desaturate(#d2e1dd, 30%)  // #dadada
color.green($color)
green($color) //=> number

Returns the green channel of $color as a number between 0 and 255.

The $color must be in a legacy color space.

Because color.green() is redundant with color.channel(), it’s no longer recommended. Instead of color.green($color), you can write color.channel($color, "green").

@use 'sass:color';

@debug color.green(#e1d7d2); // 215
@debug color.green(white); // 255
@debug color.green(black); // 0
// SASS
@use 'sass:color'

@debug color.green(#e1d7d2)  // 215
@debug color.green(white)  // 255
@debug color.green(black)  // 0
color.hue($color)
hue($color) //=> number

Returns the hue of $color as a number between 0deg and 360deg.

The $color must be in a legacy color space.

Because color.hue() is redundant with color.channel(), it’s no longer recommended. Instead of color.hue($color), you can write color.channel($color, "hue").

@use 'sass:color';

@debug color.hue(#e1d7d2); // 20deg
@debug color.hue(#f2ece4); // 34.2857142857deg
@debug color.hue(#dadbdf); // 228deg
// SASS
@use 'sass:color'

@debug color.hue(#e1d7d2)  // 20deg
@debug color.hue(#f2ece4)  // 34.2857142857deg
@debug color.hue(#dadbdf)  // 228deg
lighten($color, $amount) //=> color

Makes $color lighter.

The $color must be in a legacy color space.

The $amount must be a number between 0% and 100% (inclusive). Increases the HSL lightness of $color by that amount.

The lighten() function increases lightness by a fixed amount, which is often not the desired effect. To make a color a certain percentage lighter than it was before, use scale() instead.

Because lighten() is usually not the best way to make a color lighter, it’s not included directly in the new module system. However, if you have to preserve the existing behavior, lighten($color, $amount) can be written color.adjust($color, $lightness: $amount, $space: hsl).

@use 'sass:color';

// #e1d7d2 has lightness 85%, so when lighten() adds 30% it just returns white.
@debug lighten(#e1d7d2, 30%); // white

// scale() instead makes it 30% lighter than it was originally.
@debug color.scale(#e1d7d2, $lightness: 30%); // #eae3e0
// SASS
@use 'sass:color'

// #e1d7d2 has lightness 85%, so when lighten() adds 30% it just returns white.
@debug lighten(#e1d7d2, 30%)  // white

// scale() instead makes it 30% lighter than it was originally.
@debug color.scale(#e1d7d2, $lightness: 30%)  // #eae3e0
// Lightness 46% becomes 66%.
@debug lighten(#6b717f, 20%); // #a1a5af

// Lightness 20% becomes 80%.
@debug lighten(#036, 60%); // #99ccff

// Lightness 85% becomes 100%.
@debug lighten(#e1d7d2, 30%); // white
// SASS
// Lightness 46% becomes 66%.
@debug lighten(#6b717f, 20%)  // #a1a5af

// Lightness 20% becomes 80%.
@debug lighten(#036, 60%)  // #99ccff

// Lightness 85% becomes 100%.
@debug lighten(#e1d7d2, 30%)  // white
color.lightness($color)
lightness($color) //=> number

Returns the HSL lightness of $color as a number between 0% and 100%.

The $color must be in a legacy color space.

Because color.lightness() is redundant with color.channel(), it’s no longer recommended. Instead of color.lightness($color), you can write color.channel($color, "lightness").

@use 'sass:color';

@debug color.lightness(#e1d7d2); // 85.2941176471%
@debug color.lightness(#f2ece4); // 92.1568627451%
@debug color.lightness(#dadbdf); // 86.4705882353%
// SASS
@use 'sass:color'

@debug color.lightness(#e1d7d2)  // 85.2941176471%
@debug color.lightness(#f2ece4)  // 92.1568627451%
@debug color.lightness(#dadbdf)  // 86.4705882353%
opacify($color, $amount)
fade-in($color, $amount) //=> color

Makes $color more opaque.

The $color must be in a legacy color space.

The $amount must be a number between 0 and 1 (inclusive). Increases the alpha channel of $color by that amount.

The opacify() function increases the alpha channel by a fixed amount, which is often not the desired effect. To make a color a certain percentage more opaque than it was before, use scale() instead.

Because opacify() is usually not the best way to make a color more opaque, it’s not included directly in the new module system. However, if you have to preserve the existing behavior, opacify($color, $amount) can be written color.adjust($color, $alpha: -$amount).

@use 'sass:color';

// rgba(#036, 0.7) has alpha 0.7, so when opacify() adds 0.3 it returns a fully
// opaque color.
@debug opacify(rgba(#036, 0.7), 0.3); // #036

// scale() instead makes it 30% more opaque than it was originally.
@debug color.scale(rgba(#036, 0.7), $alpha: 30%); // rgba(0, 51, 102, 0.79)
// SASS
@use 'sass:color'

// rgba(#036, 0.7) has alpha 0.7, so when opacify() adds 0.3 it returns a fully
// opaque color.
@debug opacify(rgba(#036, 0.7), 0.3)  // #036

// scale() instead makes it 30% more opaque than it was originally.
@debug color.scale(rgba(#036, 0.7), $alpha: 30%)  // rgba(0, 51, 102, 0.79)
@debug opacify(rgba(#6b717f, 0.5), 0.2); // rgba(107, 113, 127, 0.7)
@debug fade-in(rgba(#e1d7d2, 0.5), 0.4); // rgba(225, 215, 210, 0.9)
@debug opacify(rgba(#036, 0.7), 0.3); // #036
// SASS
@debug opacify(rgba(#6b717f, 0.5), 0.2)  // rgba(107, 113, 127, 0.7)
@debug fade-in(rgba(#e1d7d2, 0.5), 0.4)  // rgba(225, 215, 210, 0.9)
@debug opacify(rgba(#036, 0.7), 0.3)  // #036
color.red($color)
red($color) //=> number

Returns the red channel of $color as a number between 0 and 255.

The $color must be in a legacy color space.

Because color.red() is redundant with color.channel(), it’s no longer recommended. Instead of color.red($color), you can write color.channel($color, "red").

@use 'sass:color';

@debug color.red(#e1d7d2); // 225
@debug color.red(white); // 255
@debug color.red(black); // 0
// SASS
@use 'sass:color'

@debug color.red(#e1d7d2)  // 225
@debug color.red(white)  // 255
@debug color.red(black)  // 0
saturate($color, $amount) //=> color

Makes $color more saturated.

The $color must be in a legacy color space.

The $amount must be a number between 0% and 100% (inclusive). Increases the HSL saturation of $color by that amount.

The saturate() function increases saturation by a fixed amount, which is often not the desired effect. To make a color a certain percentage more saturated than it was before, use scale() instead.

Because saturate() is usually not the best way to make a color more saturated, it’s not included directly in the new module system. However, if you have to preserve the existing behavior, saturate($color, $amount) can be written color.adjust($color, $saturation: $amount, $space: hsl).

@use 'sass:color';

// #0e4982 has saturation 80%, so when saturate() adds 30% it just becomes
// fully saturated.
@debug saturate(#0e4982, 30%); // #004990

// scale() instead makes it 30% more saturated than it was originally.
@debug color.scale(#0e4982, $saturation: 30%); // #0a4986
// SASS
@use 'sass:color'

// #0e4982 has saturation 80%, so when saturate() adds 30% it just becomes
// fully saturated.
@debug saturate(#0e4982, 30%)  // #004990

// scale() instead makes it 30% more saturated than it was originally.
@debug color.scale(#0e4982, $saturation: 30%)  // #0a4986
// Saturation 50% becomes 70%.
@debug saturate(#c69, 20%); // #e05299

// Saturation 35% becomes 85%.
@debug desaturate(#f2ece4, 50%); // #ebebeb

// Saturation 80% becomes 100%.
@debug saturate(#0e4982, 30%)  // #004990
// SASS
// Saturation 50% becomes 70%.
@debug saturate(#c69, 20%); // #e05299

// Saturation 35% becomes 85%.
@debug desaturate(#f2ece4, 50%); // #ebebeb

// Saturation 80% becomes 100%.
@debug saturate(#0e4982, 30%)  // #004990
color.saturation($color)
saturation($color) //=> number

Returns the HSL saturation of $color as a number between 0% and 100%.

The $color must be in a legacy color space.

Because color.saturation() is redundant with color.channel(), it’s no longer recommended. Instead of color.saturation($color), you can write color.channel($color, "saturation").

@use 'sass:color';

@debug color.saturation(#e1d7d2); // 20%
@debug color.saturation(#f2ece4); // 30%
@debug color.saturation(#dadbdf); // 7.2463768116%
// SASS
@use 'sass:color'

@debug color.saturation(#e1d7d2)  // 20%
@debug color.saturation(#f2ece4)  // 30%
@debug color.saturation(#dadbdf)  // 7.2463768116%
transparentize($color, $amount)
fade-out($color, $amount) //=> color

Makes $color more transparent.

The $color must be in a legacy color space.

The $amount must be a number between 0 and 1 (inclusive). Decreases the alpha channel of $color by that amount.

The transparentize() function decreases the alpha channel by a fixed amount, which is often not the desired effect. To make a color a certain percentage more transparent than it was before, use color.scale() instead.

Because transparentize() is usually not the best way to make a color more transparent, it’s not included directly in the new module system. However, if you have to preserve the existing behavior, transparentize($color, $amount) can be written color.adjust($color, $alpha: -$amount, $space: hsl).

@use 'sass:color';

// rgba(#036, 0.3) has alpha 0.3, so when transparentize() subtracts 0.3 it
// returns a fully transparent color.
@debug transparentize(rgba(#036, 0.3), 0.3); // rgba(0, 51, 102, 0)

// scale() instead makes it 30% more transparent than it was originally.
@debug color.scale(rgba(#036, 0.3), $alpha: -30%); // rgba(0, 51, 102, 0.21)
// SASS
@use 'sass:color'

// rgba(#036, 0.3) has alpha 0.3, so when transparentize() subtracts 0.3 it
// returns a fully transparent color.
@debug transparentize(rgba(#036, 0.3), 0.3)  // rgba(0, 51, 102, 0)

// scale() instead makes it 30% more transparent than it was originally.
@debug color.scale(rgba(#036, 0.3), $alpha: -30%)  // rgba(0, 51, 102, 0.21)
@debug transparentize(rgba(#6b717f, 0.5), 0.2);  // rgba(107, 113, 127, 0.3)
@debug fade-out(rgba(#e1d7d2, 0.5), 0.4);  // rgba(225, 215, 210, 0.1)
@debug transparentize(rgba(#036, 0.3), 0.3);  // rgba(0, 51, 102, 0)
// SASS
@debug transparentize(rgba(#6b717f, 0.5), 0.2)  // rgba(107, 113, 127, 0.3)
@debug fade-out(rgba(#e1d7d2, 0.5), 0.4)  // rgba(225, 215, 210, 0.1)
@debug transparentize(rgba(#036, 0.3), 0.3)  // rgba(0, 51, 102, 0)
color.whiteness($color) //=> number
Compatibility:
Dart Sass
since 1.28.0
LibSass
✗
Ruby Sass
✗

Returns the HWB whiteness of $color as a number between 0% and 100%.

The $color must be in a legacy color space.

Because color.whiteness() is redundant with color.channel(), it’s no longer recommended. Instead of color.whiteness($color), you can write color.channel($color, "whiteness").

@use 'sass:color';

@debug color.whiteness(#e1d7d2); // 82.3529411765%
@debug color.whiteness(white); // 100%
@debug color.whiteness(black); // 0%
// SASS
@use 'sass:color'

@debug color.whiteness(#e1d7d2)  // 82.3529411765%
@debug color.whiteness(white)  // 100%
@debug color.whiteness(black)  // 0%

© 2006–2025 the Sass team, and numerous contributors
Licensed under the MIT License.
https://sass-lang.com/documentation/modules/color