WCAG Contrast Checker

See the exact WCAG contrast ratio between any two colors and know instantly whether your text passes AA or AAA — no guesswork, no spreadsheets, no waiting for a compliance report. Most contrast tools make you copy hex codes into a website, squint at a number, then start over. ColorContrast does it live: pick a foreground and background color and the ratio, the AA/AAA verdict, and a real text preview all update the moment you tweak a shade. When a pair fails, it finds the nearest passing color for you — same hue, one tap to apply. WHAT YOU GET - The exact WCAG 2.1 contrast ratio for any color pair, recalculated live as you adjust - Clear AA and AAA pass or fail verdicts for normal text, large text, and UI components - A real sample-text preview at every size, so you see exactly what a reader sees - One-tap Fix that nudges a failing color to the closest accessible shade - A full palette audit that scores every color pair at once in a contrast matrix - Saved color pairs you can reopen, copy, and share as plain text anytime PERFECT FOR - UI and product designers shipping accessible interfaces - Front-end and app developers checking color tokens against WCAG - Brand and marketing teams keeping type legible on any background - Anyone who wants readable color choices without the accessibility jargon WHY NOT JUST USE A FREE WEB CHECKER? Web checkers make you leave your design, paste hex codes one pair at a time, and give you a number with no fix. ColorContrast lives on your phone, updates in real time, previews real text, audits a whole palette at once, and hands you the nearest passing color instead of just failing you. PRIVACY Everything runs 100% on your device. No account, no ads, no tracking, and it works fully offline. FULL ACCESS The Check tab and the WCAG Guide are free forever. Auto-Fix, the full palette audit, and unlimited saved pairs unlock with ColorContrast Premium, available as a weekly plan, a yearly plan, or a one-time lifetime purchase — pick whatever fits your workflow. Pick your two colors and get an honest AA/AAA answer in seconds. Terms of Use (EULA): https://web-levi.web.app/terms Privacy Policy: https://web-levi.web.app/privacy-policy Questions? https://web-levi.web.app/#contact