outline-color property CSS Reference

Definition and Usage

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 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


Formal syntax: <color> | invert
outline-color: invert
outline-color: red
outline-color: inherit


See <color> for the various color keywords and notations.
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 browser are not required to support it. If not, they just consider the statement as invalid


.example {
  /* make the outline blue */
  outline-color: #0000FF;

produces the following outline color for a 2px outline:

outline-color is blue.


Desktop browsers

FeatureChromeFirefox (Gecko)Internet ExplorerOperaSafari (WebKit)
Basic support1.01.5 (1.8)
In versions previous to 1.5: -moz-outline-color (125)
invert valueNot supportedSupport had been dropped since 3.0 (1.9)8.07.0Not supported

Mobile browsers

FeatureAndroidFirefox Mobile (Gecko)IE PhoneOpera MobileSafari Mobile
Basic supportNANANANANA

Relative articles