What contrast ratio is required for WCAG AAA?

WCAG AAA requires a minimum contrast ratio of 7:1 for normal body text and 4.5:1 for large text headings.

Color Client-Side

Free Online Color Contrast Checker — QuizOxa Tools

Evaluate background and foreground color pairings to verify readability. Our contrast checker computes the relative luminance contrast ratio, comparing against World Wide Web Consortium (W3C) Web Content Accessibility Guidelines (WCAG) AA and AAA specifications.

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Foreground Color (Text HEX)

Background Color (HEX)

Contrast Ratio

3.96 : 1

Sample Preview Text

The quick brown fox jumps over the lazy dog.

WCAG AA Normal Text (Min 4.5:1)FAIL

WCAG AA Large Text (Min 3:1)PASS

WCAG AAA Normal Text (Min 7:1)FAIL

WCAG AAA Large Text (Min 4.5:1)FAIL

Frequently Asked Questions

Under WCAG AA guidelines, normal body text must have a minimum contrast ratio of 4.5:1, while larger headers (18pt+ or bold 14pt+) require at least 3:1.