MDN will be in maintenance mode on Friday September 22nd, starting at 10 AM Pacific / 5 PM UTC, for about 1 hour.


This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The border-inline-end-color CSS property defines the color of the logical inline-end border of an element, which maps to a physical border color depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-colorborder-right-colorborder-bottom-color, or border-left-color property depending on the values defined for writing-mode, direction, and text-orientation.

border-inline-end-color: rebeccapurple;
border-inline-end-color: #663399;

Related properties are border-block-start-colorborder-block-end-color, and border-inline-start-color, which define the other border colors of the element.

Initial valuecurrentcolor
Applies toall elements
Computed valuecomputed color
Animation typediscrete
Canonical orderthe unique non-ambiguous order defined by the formal grammar



The color of the border. See color.

Formal syntax


<color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>

<rgb()> = rgb( [ [ <percentage>{3} | <number>{3} ] [ / <alpha-value> ]? ] | [ [ <percentage>#{3} | <number>#{3} ] , <alpha-value>? ] )
<rgba()> = rgba( [ [ <percentage>{3} | <number>{3} ] [ / <alpha-value> ]? ] | [ [ <percentage>#{3} | <number>#{3} ] , <alpha-value>? ] )
<hsl()> = hsl( [ <hue> <percentage> <percentage> [ / <alpha-value> ]? ] | [ <hue>, <percentage>, <percentage>, <alpha-value>? ] )
<hsla()> = hsla( [ <hue> <percentage> <percentage> [ / <alpha-value> ]? ] | [ <hue>, <percentage>, <percentage>, <alpha-value>? ] )

<alpha-value> = <number> | <percentage>
<hue> = <number> | <angle>


HTML Content

  <p class="exampleText">Example text</p>

CSS Content

div {
  background-color: yellow;
  width: 120px;
  height: 120px;

.exampleText {
  writing-mode: vertical-lr;
  border: 10px solid blue;
  border-inline-end-color: red;


Specification Status Comment
CSS Logical Properties Level 1
The definition of 'border-inline-end-color' in that specification.
Editor's Draft Initial definition

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support No support 41.0 (41.0)[1][2] No support No support No support
Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support No support 41.0 (41.0)[1][2] No support No support No support

[1] Available since Gecko 38, but behind the preference layout.css.vertical-text.enabled, then disabled by default.

[2] Before Gecko 38, and after it, is available in a prefixed version, with a slightly different name, -moz-border-end-color.

See also

Document Tags and Contributors

 Contributors to this page: mfluehr, elysdir1, Sebastianz, teoli, fscholz, jsx, kscarfone
 Last updated by: mfluehr,