CSS colors
The CSS colors module defines colors, color types, color blending, opacity, and how you can apply these colors and effects to HTML content.
While this module has only two CSS properties, color
and opacity
, over 20 CSS and SVG properties, CSS images, at-rules, and @media rules depend on these two properties.
Colors in action
The color syntax converter below shows the values of the currently selected color in red-green-blue (RGB), hexadecimal (HEX), hue, saturation, and lightness (HSL), and hue, whiteness, and blackness (HWB) CSS color formats. All the RGB, HEX, HSL, and HWB color values here, while written differently, represent the same color value.
Selecting a color via the color picker and an opacity via the slider updates the RGB, HEX, HSL, and HWB values. When you choose a new color or opacity value, the color of the background and the slider update via the CSS properties background-color
and accent-color
, respectively.
To see the code for this color syntax converter, view the source on GitHub.
Reference
Properties
At-rules and descriptors
@color-profile
components
descriptorrendering-intent
descriptorsrc
descriptor
Functions
- Absolute color functions, including:
color-contrast()
Experimentalcolor-mix()
device-cmyk()
Experimental
Data types
Keywords
Interfaces
CSSColorProfileRule
Experimental
Guides
- Applying color to HTML elements using CSS
-
A guide to using CSS to apply color to a variety of types of content. All color-related CSS properties are touched upon.
- Understanding color and luminance
-
Color perception and using colors with color insensitive (color blind) users, reduced vision users and users with vestibular disorders or other neurological disorders in mind.
- WCAG 1.4.1: Color contrast
-
Explanation of contrast requirements between background and foreground content to ensure legibility.
- Color picker tool
-
This tool makes it easy to create, adjust, and experiment with custom colors.
Related concepts
- CSS properties that are part of other specifications:
- SVG color properties that are part of other specifications:
- SVG
color
attribute - Color wheel glossary term
- Interpolation glossary term
- The
@font-palette-values
at-ruleoverride-colors
descriptor - The
@color-profile
at-rule - The
color-gamut
@media feature - The
forced-colors
@media feature
Specifications
Specification |
---|
CSS Color Module Level 4 |
CSS Color Module Level 5 |
See also
- CSS color adjustment module and the
print-color-adjust
property. - CSS images module, which is where CSS
<gradient>
images are defined. - The
VideoColorSpace
interface - The SVG
<feColorMatrix>
element - Canvas API: applying styles and colors