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WooaColor › Contrast Checker
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WCAG Color Contrast Checker – Free Online

Instantly check color contrast ratios against WCAG accessibility standards.

18.09:1
Color Contrast Ratio
AA Normal Text
Min 4.5:1 required
✓ Pass
AA Large Text
Min 3:1 required (18pt+)
✓ Pass
AAA Normal Text
Min 7:1 required
✓ Pass
AAA Large Text
Min 4.5:1 required
✓ Pass
Preview
Large Text Preview (18pt+)
Normal text preview. This is a normal text preview for contrast check.
Small text preview. Small text preview for accessibility testing.

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Frequently Asked Questions

Q. What is WCAG color contrast?

WCAG (Web Content Accessibility Guidelines) defines minimum contrast ratios between text and background colors to ensure readability for all users, including those with visual impairments.

Q. What are AA and AAA standards?

WCAG AA requires a contrast ratio of at least 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.

Q. How do I use the contrast checker?

Enter the foreground (text) and background colors in HEX format, and the tool instantly shows the contrast ratio and whether it passes AA or AAA standards.