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♿ Design

Color Contrast Checker

Check WCAG 2.1 color contrast ratios for accessibility compliance.

The Quick Brown Fox
Jumps over the lazy dog. 0123456789
Small text sample — 12px equivalent
0:1
Contrast Ratio
AA Level
Normal Text (4.5:1)
Large Text (3:1)
UI Components (3:1)
AAA Level
Normal Text (7:1)
Large Text (4.5:1)

🎨 Accessible Color Suggestions

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FAQ

What is WCAG?

WCAG (Web Content Accessibility Guidelines) defines standards for making web content accessible. For contrast, WCAG 2.1 requires a minimum ratio of 4.5:1 for normal text (AA) and 7:1 for enhanced accessibility (AAA).

What counts as large text?

Large text is defined as 18pt (24px) regular weight or 14pt (18.66px) bold. Large text only needs a 3:1 contrast ratio for AA compliance.

📖 About Color Contrast Checker

Color Contrast Checker is a free, browser-based tool built for developers, writers, and quality-focused professionals. Check color contrast ratios for WCAG 2.1 accessibility compliance. Test text and background color combinations. AA and AAA level checks. Free online contrast checker. This tool processes everything locally using JavaScript — no data is uploaded to any server, no account is required, and there are no usage limits. Whether you’re working on a quick project or handling sensitive data, your privacy is fully protected. Bookmark this page and use it anytime — it works on desktop, tablet, and mobile devices.

How to Use

  1. Enter your data — Type, paste, or upload your input in the fields above.
  2. Configure options — Adjust any settings or parameters to match your requirements.
  3. Get instant results — Output updates automatically in real-time as you type.
  4. Copy or download — Use the Copy button to grab results, or download if available.

Related Tools

🎨 Color Converter 🖌️ Color Picker 🎨 Color Palette 🌈 Gradient Generator
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