1. CSS caret-color

    The `caret-color` property allows the color to be set of the caret (blinking text insertion pointer) in an editable text area.

  2. CSS print-color-adjust

    The `print-color-adjust` (or `-webkit-print-color-adjust` as prefixed in WebKit/Blink browsers) property is a CSS extension that can be used to force printing of background colors and images.

  3. CSS color() function

    The CSS `color()` function allows the browser to display colors in any color space, such as the P3 color space which can display colors outside of the default sRGB color space.

  4. CSS font-palette

    The font-palette CSS property allows selecting a palette from a color font. In combination with the `@font-palette-values` at-rule, custom palettes can be defined.

  5. LCH and Lab color values

    The `lch()` and `lab()` color functions are based on the CIE LAB color space, representing colors in a way that closely matches human perception and provides access to a wider spectrum of colors than offered by the usual RGB color space.

  6. Rebeccapurple color

    The new color added in CSS Color Module Level 4

  7. #rrggbbaa hex color notation

    The CSS Color Module Level 4 defines new 4 & 8 character hex notation for color to include the opacity level.

  8. CSS3 Colors

    Method of describing colors using Hue, Saturation and Lightness (hsl()) rather than just RGB, as well as allowing alpha-transparency with rgba() and hsla().

  9. CSS currentColor value

    A CSS value that will apply the existing `color` value to other properties like `background-color`, etc.

  10. Color input type

    Form field allowing the user to select a color.

  11. theme-color Meta Tag

    Meta tag to define a suggested color that browsers should use to customize the display of the page or of the surrounding user interface. The meta tag overrides any theme-color set in the web app manifest.

  12. prefers-color-scheme media query

    Media query to detect if the user has set their system to use a light or dark color theme.

  13. htmlfontelement api: color

  14. htmlhrelement api: color

  15. imagedata api: colorspace

  16. oes_draw_buffers_indexed api: colormaskioes

  17. screen api: colordepth

  18. videoframe api: colorspace

  19. webgl2renderingcontext api: colormask

  20. webglrenderingcontext api: colormask

  21. xrwebglsubimage api: colortexture

  22. xrwebglsubimage api: colortextureheight

  23. xrwebglsubimage api: colortexturewidth

  24. css property: color-scheme

  25. css property: color-scheme: `only dark` keyword

  26. css property: color-scheme: `only light` keyword

  27. types: `calc()`: gradient color stops support

  28. types: <color>

  29. types: <color>: `color()` (profiled color values)

  30. types: <color>: `color-contrast()`

  31. types: <color>: `color-mix()`

  32. types: <color>: `hsl()` (hsl color model)

  33. types: <color>: `hsla()` (hsl color model)

  34. types: <color>: `hsl()` (hsl color model): alpha parameter

  35. types: <color>: `hsl()` (hsl color model): space-separated parameters

  36. types: <color>: `hwb()` (hwb color model)

  37. types: <color>: named colors

  38. types: <color>: named colors: `rebeccapurple`

  39. types: <color>: `oklab()` (oklab color model)

  40. types: <color>: `oklch()` (oklch color model)

  41. types: <color>: `rgb()` (rgb color model)

  42. types: <color>: `rgba()` (rgb color model)

  43. types: <color>: `rgb()` (rgb color model): alpha parameter

  44. types: <color>: `rgb()` (rgb color model): float values in parameters

  45. types: <color>: rgb hexadecimal notation (`#rrggbb`, `#rgb`, …)

  46. types: <color>: system colors

  47. types: <color>: `transparent` keyword

  48. html element: font: color

  49. html element: hr: color

  50. html element: meta: name: color-scheme