Design Tools

Color Contrast Checker

Check color contrast ratio for WCAG accessibility compliance

Foreground Color

Background Color

Preview Title

This is sample body text to check readability with the selected color combination.

Font Size:16px

Large text (≥18px or ≥14px bold) requires lower contrast.

Contrast Ratio

14.18:1

Normal Text (<18px)

AA (4.5:1)AAA (7:1)

Large Text (≥18px / ≥14px bold)

AA (3:1)AAA (4.5:1)

UI Components

AA (3:1)

About WCAG

WCAG 2.1 Level AA: Minimum 4.5:1 for normal text, 3:1 for large text.

WCAG 2.1 Level AAA: Enhanced 7:1 for normal text, 4.5:1 for large text.

What is Color Contrast Checker?

Check color contrast ratio for WCAG accessibility compliance

Color Contrast Checker is a free online tool that works directly in your browser. No installation or signup required. All processing happens locally on your device, ensuring your data stays private and secure.

Why Use Color Contrast Checker?

✓100% Free - No hidden costs or premium features
✓No Signup Required - Start using instantly without creating an account
✓Privacy First - All processing happens in your browser. Your data never leaves your device
✓Lightning Fast - Instant results with no server delays

How to Use

Enter or paste your text in the input area above
The tool will automatically process your input
Copy the result or download it as a file

Features

✓WCAG 2.1 AA and AAA level checks
✓Real-time contrast ratio calculation
✓Text preview on background
✓Suggested color adjustments
✓Large text vs normal text standards
✓Color picker integration

Frequently Asked Questions

What is a good contrast ratio?

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