Color Contrast Ratio Checker
Check foreground and background color contrast for WCAG AA and AAA compliance with suggestions.
Knowing a color pairing fails WCAG contrast is only half of what's actually useful, the other half is knowing what to change it to, and a checker that stops at a pass-or-fail verdict leaves picking a replacement color to trial and error rather than offering an actual answer. This tool checks a foreground and background pairing against WCAG AA and AAA thresholds and, when it fails, suggests a specific adjusted color that would pass instead, rather than a verdict alone.
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Useful for getting a concrete replacement color the moment a current pairing fails AA, choosing between AA and the stricter AAA threshold for a project with a higher accessibility bar, or fixing a failing color pairing directly from the suggestion instead of guessing at a few alternatives by eye.
Key features
- Clean interface
- Fast processing
- No signup required
- Works offline