The color-adjust
CSS property sets what, if anything, the user agent may do to optimize the appearance of the element on the output device. By default, the browser is allowed to make any adjustments to the element's appearance it determines to be necessary and prudent given the type and capabilities of the output device.
color-adjust: economy; color-adjust: exact; /* Global values */ color-adjust: inherit; color-adjust: initial; color-adjust: revert; color-adjust: unset;
The color-adjust
property's value must be one of the following keywords.
economy
The user agent is allowed to make adjustments to the element as it deems appropriate and prudent in order to optimize the output for the device it's being rendered for. For example, when printing, a browser might opt to leave out all background images and to adjust text colors to be sure the contrast is optimized for reading on white paper. This is the default.
exact
The element's content has been specifically and carefully crafted to use colors, images, and styles in a thoughtful and/or important way, such that being altered by the browser might actually make things worse rather than better. The appearance of the content should not be changed except by the user's request. For example, a page might include a list of information with rows whose background colors alternate between white and a light grey. Removing the background color would decrease the legibility of the content.
There are a number of reasons a browser might wish to deviate from the specified appearance, such as:
Any options the user agent offers the user to allow them to control the use of color and images will take priority over the value of color-adjust
. In other words, there isn't any guarantee that color-adjust
will do anything. Not only can the user override the behavior, but each user agent is allowed to decide for itself how to handle color-adjust
in any given situation.
Initial value | economy |
---|---|
Applies to | all elements |
Inherited | yes |
Computed value | as specified |
Animation type | discrete |
economy | exact
In this example, a box is shown which uses a background-image
and a translucent linear-gradient()
function atop a black background color to have a dark blue gradient behind medium red text. For whatever reason, this is the desired appearance in any rendering environment, including on paper, so we also use color-adjust: exact
to tell the browser not to make color or style adjustments to the box when rendering it.
.my-box { background-color: black; background-image: linear-gradient(rgba(0, 0, 180, 0.5), rgba(70, 140, 220, 0.5)); color: #900; width: 15rem; height: 6rem; text-align: center; font: 24px "Helvetica", sans-serif; display: flex; align-items: center; justify-content: center; color-adjust: exact; }
<div class="my-box"> <p>Need more contrast!</p> </div>
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
color-adjust |
49 |
79 |
48 |
No |
15 |
6 |
49 |
49 |
48 |
36 |
6 |
5.0 |
color
, background-color
, border-color
, outline-color
, text-decoration-color
, text-emphasis-color
, text-shadow
, caret-color
, and column-rule-color
background-image
-webkit-print-color-adjust
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https://developer.mozilla.org/en-US/docs/Web/CSS/color-adjust