Color contrast checker

Checks a text and background color pair against the WCAG 2 contrast thresholds.

Text Background

Large text, 24px

Body text at 16px. The quick brown fox jumps over the lazy dog.

Accepts #rgb or #rrggbb. Large text means at least 24px, or 18.66px bold. Thresholds: normal text AA 4.5, AAA 7; large text AA 3, AAA 4.5; UI components and graphics 3.