Color Contrast Checker
Check WCAG 2.1 color contrast compliance for accessibility
// WCAG 2.1
Web Content Accessibility Guidelines require minimum contrast ratios for text readability by people with visual impairments.
// AA vs AAA
AA requires 4.5:1 for normal text, 3:1 for large text. AAA requires 7:1 for normal text, 4.5:1 for large text.
// Large Text
Large text is defined as 18pt (24px) or 14pt bold (18.66px bold). Lower contrast ratios are acceptable.
// How to Use Online Color Contrast Checker
- Enter or paste your source data into the tool input.
- Click the primary action button to run Online Color Contrast Checker.
- Review the output, then copy or export your result.
// FAQ: What does Online Color Contrast Checker do?
Online Color Contrast Checker helps you check wcag 2.1 color contrast compliance for accessibility in your browser with instant results.
// FAQ: How do I use Online Color Contrast Checker?
Paste or type your input, choose the needed action, and copy the generated output when the result is ready.
// FAQ: Is my data safe when using Online Color Contrast Checker?
Yes. Processing runs in your browser session for this page, so your content is not uploaded by this tool workflow.
// FAQ: Can I use Online Color Contrast Checker on mobile devices?
Yes. Online Color Contrast Checker works on modern mobile browsers, so you can run it from phones and tablets.