Contrast Ratio: Easily calculate color contrast ratios. Passing WCAG was never this easy!

The simplest, easiest tool for quickly finding good contrast:

 

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As you type, the contrast ratio indicated will update. Hover over the circle to get more detailed information. When semi-transparent colors are involved as backgrounds, the contrast ratio will have an error margin, to account for the different colors they may be over.

Curated by (Lifekludger)
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