Contrast Checker
WCAG AA / AAA · fix suggestions
This tool runs locally in your browser. Your data is never sent to any server.
About Contrast Checker
Check WCAG contrast between text and background: body AA (4.5:1), AAA (7:1), large text and UI components (3:1), with a real-size preview. When a pair fails you get suggested colors that keep the hue and only shift lightness — one click to apply.