WCAG contrast checker
Check text against a card colour for legibility. Enter two colours and see the contrast ratio and AA/AAA results.
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The quick brown fox jumps over the lazy dog — 0123456789
How to use
- Pick the text colour.
- Pick the background / stock colour.
- Read the contrast ratio and the AA/AAA results.
FAQ
What contrast ratio do I need?
WCAG AA requires at least 4.5:1 for normal text and 3:1 for large text (18pt+/14pt bold). AAA requires 7:1 for normal and 4.5:1 for large text.
Why does this matter for print?
Low-contrast type — pale grey on white, or white on a light stock — is hard to read in the hand and worse in low light. A contrast check catches that before you print.
Does CMYK change the contrast?
Yes. This tool uses screen (sRGB) colours. Printed CMYK colours can differ, so treat the result as a guide and check a proof for critical work.