WCAG (Web Content Accessibility Guidelines) is an international standard for web accessibility. The contrast requirements ensure text is readable for users with low vision or color blindness.

What counts as 'large text'?

WCAG defines large text as 18pt (24px) or larger for regular weight, or 14pt (18.67px) or larger for bold text. Large text has a lower contrast requirement than normal text.

Contrast Checker — WCAG AA and AAA Color Accessibility

All tools › Contrast Checker (WCAG) ● Live Developer Tools

Foreground

Background

The quick brown fox jumps over the lazy dog.

Small text sample at 14px.

13.98:1

Contrast ratio

WCAG AA — Normal text (≥4.5:1)Pass

WCAG AA — Large text (≥3:1)Pass

WCAG AAA — Normal text (≥7:1)Pass

WCAG AAA — Large text (≥4.5:1)Pass

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