Color Contrast Checker — Free Online Tool

Check WCAG AA/AAA contrast ratios for text and backgrounds. Color Contrast Checker is a free online tool from the ToolsRift Color Tools collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.

Loading Color Contrast Checker…

How to use Color Contrast Checker

  1. Open the Color Contrast Checker above — it loads instantly, no account needed.
  2. Enter or upload your input. Everything is processed locally on your device.
  3. Get your result immediately and copy or download it with one click.

Frequently asked questions

What is WCAG?

Web Content Accessibility Guidelines — standards ensuring web content is accessible to people with disabilities.

What contrast ratio is required?

WCAG AA requires 4.5:1 for normal text, 3:1 for large text. AAA requires 7:1 and 4.5:1 respectively.

What counts as large text?

18pt (24px) or 14pt bold (approximately 18.67px bold) is considered large text.

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