The color-index CSS media feature can be used to test the number of entries in the output device's color lookup table.

Syntax

The color-index feature is specified as an <integer> value representing the number of entries in the output device's color lookup table. (This value is zero if the device does not use such a table.) It is a range feature, meaning that you can also use the prefixed min-color-index and max-color-index variants to query minimum and maximum values, respectively.

Examples

Basic example

HTML

<p>This is a test.</p>

CSS

p {
  color: black;
}

@media (color-index) {
  p {
    color: red;
  }
}

@media (min-color-index: 15000) {
  p {
    color: #1475ef;
  }
}

Result

Custom stylesheet

This HTML will apply a special stylesheet for devices that have at least 256 colors.

<link rel="stylesheet" href="http://foo.bar.com/base.css" />
<link rel="stylesheet" media="all and (min-color-index: 256)" href="http://foo.bar.com/color-stylesheet.css" />

Specifications

Specification Status Comment
Media Queries Level 4
The definition of 'color-index' in that specification.
Candidate Recommendation The value can now be negative, in which case it computes to false.
Media Queries
The definition of 'color-index' in that specification.
Recommendation Initial definition. The value must be nonnegative.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic support
DeprecatedNon-standard
Chrome Full support YesEdge ? Firefox No support NoIE No support NoOpera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile ? Firefox Android ? Opera Android ? Safari iOS ? Samsung Internet Android ?

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
Non-standard. Expect poor cross-browser support.
Non-standard. Expect poor cross-browser support.
Deprecated. Not for use in new websites.
Deprecated. Not for use in new websites.

Document Tags and Contributors

Contributors to this page: connorshea, mfluehr, cvrebert, andylampert
Last updated by: connorshea,