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@media.prefers-contrast

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The prefers-contrast CSS media feature is used to detect if the user has requested that the web content is presented with a higher (or lower) contrast.

Syntax

no-preference
Indicates that the user has made no preference known to the system. This keyword value evaluates as false in a Boolean context.
more
Indicates that user has notified the system that they prefer an interface that has a higher level of contrast.
less
Indicates that user has notified the system that they prefer an interface that has a lower level of contrast.

User preferences

Various operating systems do support such preferences and user agents are likely to rely on the settings provided by the operating system.

Examples

This example has an annoying low contrast by default.

HTML

<div class="contrast">low contrast box</div>

CSS

.contrast {
  width: 100px;
  height: 100px;
  outline: 2px dashed black;
}

@media (prefers-contrast: high) {
  .contrast {
    outline: 2px solid black;
  }
}

Result

Specifications

Specification Status Comment
Media Queries Level 5
The definition of 'prefers-contrast' in that specification.
Editor's Draft Initial definition.

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
prefers-contrast media feature No No 80
Disabled
80
Disabled
Disabled From version 80: this feature is behind the layout.css.prefers-contrast.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
No No No
Mobile
Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
prefers-contrast media feature No No No No No No

See also

© 2005–2020 Mozilla and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/CSS/@media/prefers-contrast