color-mix()

The color-mix() functional notation takes two <color> values and returns the result of mixing them in a given colorspace by a given amount.

Syntax

css
color-mix(in lch, plum, pink);
color-mix(in lch, plum 40%, pink);
color-mix(in srgb, #34c9eb 20%, white);
color-mix(in hsl longer hue, hsl(120 100% 50%) 20%, white);

Values

Functional notation: color-mix(method, color1[ p1], color2[ p2])

method

A <color-interpolation-method> specifying the interpolation color space.

color1, color2

<color> values to mix.

p1, p2 Optional

<percentage> values between 0% and 100%, specifying the amount of each color to mix. They are normalized as follows:

  • If both p1 and p2 are omitted, then p1 = p2 = 50%.
  • If p1 is omitted, then p1 = 100% - p2.
  • If p2 is omitted, then p2 = 100% - p1.
  • If p1 = p2 = 0%, the function is invalid.
  • If p1 + p2 ≠ 100%, then p1' = p1 / (p1 + p2) and p2' = p2 / (p1 + p2), where p1' and p2' are the normalization results.

Formal syntax

<color-mix()> = 
color-mix( <color-interpolation-method> , [ <color> && <percentage [0,100]>? ]#{2} )

<color-interpolation-method> =
in [ <rectangular-color-space> | <polar-color-space> <hue-interpolation-method>? ]

<rectangular-color-space> =
srgb |
srgb-linear |
display-p3 |
a98-rgb |
prophoto-rgb |
rec2020 |
lab |
oklab |
xyz |
xyz-d50 |
xyz-d65

<polar-color-space> =
hsl |
hwb |
lch |
oklch

<hue-interpolation-method> =
[ shorter | longer | increasing | decreasing ] hue

Examples

Mixing two colors

In a supporting browser, the items have more blue, and therefore less white, as a higher percentage of #34c9eb is mixed in. When no value is given, the percentage defaults to 50%.

HTML

html
<ul>
  <li>0%</li>
  <li>25%</li>
  <li>50%</li>
  <li>75%</li>
  <li>100%</li>
  <li></li>
</ul>

CSS

css
li:nth-child(1) {
  background-color: color-mix(in srgb, #34c9eb 0%, white);
}

li:nth-child(2) {
  background-color: color-mix(in srgb, #34c9eb 25%, white);
}

li:nth-child(3) {
  background-color: color-mix(in srgb, #34c9eb 50%, white);
}

li:nth-child(4) {
  background-color: color-mix(in srgb, #34c9eb 75%, white);
}

li:nth-child(5) {
  background-color: color-mix(in srgb, #34c9eb 100%, white);
}

li:nth-child(6) {
  background-color: color-mix(in srgb, #34c9eb, white);
}

Result

Using hue interpolation in color-mix()

When using shorter hue interpolation, the resulting hue angle is halfway between the input angles when taking the shortest route around the color wheel. The longer hue interpolation method results in a hue angle which is the midpoint when taking the longer route around the color wheel. For more information, see <hue-interpolation-method>.

html
<div class="color-one">color one</div>
<div class="color-two">color two</div>
<div class="shorter">mixed shorter</div>
<div class="longer">mixed longer</div>

CSS

css
.color-one {
  background-color: hsl(10 100% 50%);
}
.color-two {
  background-color: hsl(60 100% 50%);
}
.shorter {
  background-color: color-mix(
    in hsl shorter hue,
    hsl(10 100% 50%),
    hsl(60 100% 50%)
  );
}
.longer {
  background-color: color-mix(
    in hsl longer hue,
    hsl(10 100% 50%),
    hsl(60 100% 50%)
  );
}

Result

Specifications

Specification
CSS Color Module Level 5
# color-mix

Browser compatibility

BCD tables only load in the browser

See also