User Interface Component Contrast (Minimum)

AA

New

Discussion of the issue is available in Issue 10. To file comments on this proposal, please raise new issues for each discrete comment in GitHub.

Essential visual identifiers of user interface components have a contrast ratio of at least 4.5:1 against the immediate surrounding color(s), except for the following situations:

Thicker
A contrast ratio of at least 3:1 is required where the minimum width and height are at least 3 CSS pixels, for the essential visual identifier.
Inactive
Disabled or otherwise inactive user interface components
User agent control
The color(s) of the user interface component and any adjacent color(s) are determined by the user agent and are not modified by the author.