CSS colors

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.

• color
• opacity

• @color-profile
  • components descriptor
  • rendering-intent descriptor
  • src descriptor

• Color functions:
  • rgb()
  • hsl()
  • hwb()
  • lab()
  • lch()
  • oklab()
  • oklch()
  • color()
• color-mix()
• device-cmyk()
• light-dark()

• <color>
• <color-function>
• <hex-color>
• <named-color>
• <alpha-value>
• <hue>
• <system-color>
• <colorspace-params>

• color space
• currentcolor
• interpolation
• RGB
• transparent

• CSSColorProfileRule

Applying color to HTML elements using CSS

A guide to using CSS to apply color to a variety of types of content, including all CSS properties that accept <color> as a value.

CSS color values

An overview of color spaces and the different <color> functional notations available in CSS.

Using color wisely

Color theory and resources, including finding the right colors to create an accessible color palette, contrast, and printing in color.

Using relative colors

This article explains relative CSS color syntax, shows what the different options are, and looks at some illustrative examples.

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.

• CSS properties that are part of other specifications:
  • accent-color
  • background-color
  • background-image
  • border-color
  • box-shadow
  • caret-color
  • color
  • color-scheme
  • column-rule-color
  • outline-color
  • scrollbar-color
  • text-decoration-color
  • text-emphasis-color
  • text-shadow
  • -webkit-tap-highlight-color
• SVG color properties that are part of other specifications:
  • fill
  • flood-color
  • lighting-color
  • stop-color
  • stroke
• SVG color attribute
• Color wheel glossary term
• Interpolation glossary term
• The @font-palette-values at-rule override-colors descriptor
• The @color-profile at-rule
• The color-gamut @media feature
• The forced-colors @media feature

• 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