Rule: Color contrast of text: Minimum

Rule ID Color 1
Conformance Required
Definition Text content must exceed minimum Color Contrast Ratio (CCR) of 3 for large and/or bolded text and 4.5 for any other size or style of text.
  • The higher the color contrast of text the more easy it is to read, especially for people with visual impairments.
Conformance Required
WCAG Success Criteria

Success Criterion 1.4.3 Contrast (Minimum)

Rule Category Color/Content
Rule Scope Element
  • Change the foreground color to a more complementary color to the background color.
  • Change the background color to a more complementary color to the foreground color.
  • Remove background images or verify they do not compromise color contrast requirements.
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