Contrast Checker
Pick text and background colors to see the contrast ratio and whether it passes WCAG accessibility thresholds for normal and large text — with a live preview.
FAQ
What contrast ratio do I need?
WCAG 2.1 requires 4.5:1 for normal text and 3:1 for large text (AA); AAA raises these to 7:1 and 4.5:1.
What counts as large text?
At least 18pt (24px) regular, or 14pt (18.5px) bold or heavier.
Why does accessibility contrast matter?
Low contrast excludes low-vision users and fails legal accessibility requirements in many countries — and it hurts readability for everyone.