Convert a color
HEX
—RGB
—HSL
—Contrast checker (WCAG)
Large text 24px
Normal text — the quick brown fox jumps over the lazy dog.
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contrast ratio
What the badges mean
WCAG measures contrast as a ratio from 1:1 (identical) to 21:1 (black on white). Level AA — the common legal/professional bar — requires 4.5:1 for normal text and 3:1 for large text (18pt+, or 14pt bold). The stricter AAA level requires 7:1 and 4.5:1. If the text color has transparency, it is composited onto the background before measuring, just like the browser renders it.
Everything runs in your browser — nothing is uploaded and nothing is tracked.