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WCAG Color Contrast Checker

Check opaque sRGB text and background colors against WCAG AA and AAA contrast thresholds.

How to use

  1. Enter text and background colors as #RGB or #RRGGBB.
  2. Review the ratio and separate normal, large-text and UI results.

Frequently asked questions

Where is my input processed?

Input stays in browser memory. These tools do not upload, store or log it.