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Color Contrast Checker
Check text and background colors against WCAG AA and AAA contrast requirements.
Choose two colors
Live preview
Accessible type
Readable text starts with enough contrast. Check both normal and large text before you publish.
16.00:1
contrast ratio
AA Normal4.5:1 required
AA Large3:1 required
AAA Normal7:1 required
AAA Large4.5:1 required
WCAG reference. Large text is at least 18pt (24px), or 14pt (18.66px) bold. Large text has lower thresholds, but always check the real font, weight, and size in your design.