Getting started
Check text and background contrast against WCAG AA and AAA thresholds.
Rules and limits
Use opaque sRGB #RRGGBB colors. Normal text: AA 4.5:1, AAA 7:1. Large text: AA 3:1, AAA 4.5:1; large means at least 18pt or bold 14pt. Thresholds use the unrounded ratio. This is not a full accessibility audit.