font-palette

normal

Specifies the default color palette or the default glyph colorization (set by the font maker) to be used for the font. With this setting, the palette in the font at index 0 is rendered.

light

Specifies the first palette in the font that matches 'light' to be used for the font. Some fonts contain metadata that identify a palette as applicable for a light (close to white) background. If a font does not have this metadata, the light value behaves as normal.

dark

Specifies the first palette in the font that matches 'dark' to be used for the font. Some fonts contain metadata that identify a palette as applicable for a dark (close to black) background. If a font does not have this metadata, the value behaves as normal.

<palette-identifier>

Allows you to specify your own values for the font palette by using the @font-palette-values at-rule. This value is specified using the <dashed-ident> format.

palette-mix()

Creates a new font-palette value by blending together two font-palette values by specified percentages and color interpolation methods.

font-palette = 
  normal                |
  light                 |
  dark                  |
  <palette-identifier>  |
  <palette-mix()>       

<palette-mix()> = 
  palette-mix( <color-interpolation-method> , [ [ normal | light | dark | <palette-identifier> | <palette-mix()> ] && <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  

This example allows you to use the first palette marked as dark (works best on a near black background) by the font-maker.

@media (prefers-color-scheme: dark) {
  .banner {
    font-palette: dark;
  }
}

This example illustrates how to animate font-palette value changes to create a smooth font animation.

HTML

The HTML contains a single paragraph of text to animate:

<p>color-palette<br />animation</p>

CSS

In the CSS, we import a color font called Nabla from Google Fonts, and define two custom font-palette values using the @font-palette-values at-rule. We then create @keyframes that animate between these two palettes, and apply this animation to our paragraph.

@import url("https://fonts.googleapis.com/css2?family=Nabla&display=swap");

@font-palette-values --blueNabla {
  font-family: Nabla;
  base-palette: 2; /* this is Nabla's blue palette */
}

@font-palette-values --greyNabla {
  font-family: Nabla;
  base-palette: 3; /* this is Nabla's grey palette */
}

@keyframes animate-palette {
  from {
    font-palette: --greyNabla;
  }

  to {
    font-palette: --blueNabla;
  }
}

p {
  font-family: "Nabla";
  font-size: 5rem;
  margin: 0;
  text-align: center;
  animation: animate-palette 4s infinite alternate linear;
}

Result

The output looks like this:

• palette-mix()
• @font-palette-values
• base-palette descriptor
• font-family descriptor
• override-colors descriptor