Color Contrast Checker (WCAG)
Check color contrast ratios for WCAG 2.0 AA and AAA accessibility compliance. Test foreground and background color combinations.
Frequently Asked Questions
What is WCAG contrast ratio?
WCAG contrast ratio measures the difference in luminance between two colors, from 1:1 (no contrast) to 21:1 (maximum, black on white).
What are AA and AAA levels?
AA requires 4.5:1 for normal text and 3:1 for large text. AAA requires 7:1 for normal text and 4.5:1 for large text.
What counts as large text?
Large text is at least 18pt (24px) for normal weight or 14pt (18.66px) for bold weight.