Rule: Color contrast of user interface controls

Rule ID Color 4
Conformance Required
Definition Color contrast of non-text content in user interface controls.
Purpose
  • For people with color blindness and other forms of visual impairments will not be able to see colors or color differences.
Conformance Required
WCAG Success Criteria

Success Criterion 1.4.11 Non-text Contrast

Other Related Success Criterion:

Rule Category Color/Content
Rule Scope Element
Techniques
  • Identify each user-interface component (link, button, form control) on the page
  • Identify the visual (non-text) indicators of the component that are required to identify that a control exists, and indicate the current state.
  • Test the visual indicator contrast in each state.
Information Links