Summary

The outline-color CSS property sets the color of the outline of an element. An outline is a line that is drawn around elements, outside the border edge, to make the element stand out.

  • Initial value invert, for browsers supporting it, currentColor for the other
  • Applies to all elements
  • Inherited no
  • Media visual, interactive
  • Computed value For the keyword invert, the computed value is invert. For the color value, if the value is translucent, the computed value will be the rgba() corresponding one. If it isn't, it will be the rgb() corresponding one. The transparent keyword maps to rgb(0,0,0).
  • Animatable yes, as a color
  • Canonical order the unique non-ambiguous order defined by the formal grammar

Syntax

/* Keyword values */
outline-color: invert;
outline-color: red;

/* Global values */
outline-color: inherit;
outline-color: initial;
outline-color: unset;

Values

<color>
See <color> for the various color keywords and notations.
invert
To ensure the outline is visible, performs a color inversion of the background. This makes the focus border more salient, regardless of the color in the background. Note that browsers are not required to support it. If not, they just consider the statement as invalid

Formal syntax

<color> | invert

Example

HTML

<p class="example">My outline is blue, da ba dee.</p>

CSS

.example {
  /* first need to set "outline" */
  outline: 2px solid;
  /* make the outline blue */
  outline-color: #0000FF;
}

Live:

Specifications

Specification Status Comment
CSS Basic User Interface Module Level 3
The definition of 'outline-color' in that specification.
Candidate Recommendation No change.
CSS Transitions
The definition of 'outline-color' in that specification.
Working Draft Defines outline-color as animatable.
CSS Level 2 (Revision 1)
The definition of 'outline-color' in that specification.
Recommendation  

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 1.0 1.5 (1.8) [1] 8.0 7.0 1.2 (125)
invert value Not supported Not supported [2] 8.0 7.0 Not supported
Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support ? ? ? ? ?

[1] In versions previous to Gecko 1.8: -moz-outline-color.

[2] Support had been dropped in version 3.0 (1.9).

See also

Document Tags and Contributors

Last updated by: fscholz,