Make sure your text is easy to read for everyone. Check any colour pair against the WCAG accessibility standards in real time.
Large heading text
Normal body text. The quick brown fox jumps over the lazy dog, and readers should be able to read this comfortably on any screen.
Small print and captions at 13 px
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Light grey text on a white background may look elegant, but many people cannot read it comfortably, especially on a phone outdoors. Low contrast is the most common accessibility problem on websites, and Google's Lighthouse audit flags it.
The WCAG standard asks for a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text (about 24 px, or 19 px bold) to reach level AA. Level AAA asks for 7:1 and 4.5:1. This checker calculates the ratio exactly as WCAG 2 defines it and suggests the nearest colour that passes.
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