Test all WCAG 2.1 text size requirements with pass/fail badges. WCAG Color Compliance is a free online tool from the ToolsRift Color Tools collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.
Pick a text color and a background color; the tool shows the exact contrast ratio and a pass or fail badge for each WCAG level and text size.
Yes — WCAG AA requires a 4.5:1 contrast ratio for normal text and 3:1 for large text. AAA raises this to 7:1 and 4.5:1.
Text at 18pt (24px) or 14pt bold (about 18.66px bold) is treated as large text and uses the lower thresholds.
3:1 is the minimum for large text and for user-interface components and graphical objects under WCAG 2.1.