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


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.


Basic example


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


p {
  color: black;

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

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


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" />


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 compatibilityUpdate compatibility data on GitHub

Chrome Edge Firefox Internet Explorer Opera Safari
color-index media feature 29 79 No No 16 8
Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
color-index media feature ≤37 29 No 16 8 2.0

© 2005–2020 Mozilla and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.