Dopely Colors
Accessibility Suite V2.0

Check Contrast for Everyone

Ensure your designs are accessible to the world. Validate against WCAG Standards instantly.

Color Selection

HEX Code
HEX Code
Contrast Ratio
21.00
Excellent Score

Aa

The quick brown fox jumps over the lazy dog.

Good contrast improves readability for users with visual impairments and reduces eye strain for everyone.

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WCAG 2.1 Pass/Fail

AANormal Text
For standard paragraph usage
Requires 4.5:1
AALarge Text
For headings >18pt (24px)
Requires 3.0:1
AAANormal Text
Gold standard for legal/gov
Requires 7.0:1
AAALarge Text
High contrast headings
Requires 4.5:1

Web Accessibility Guidelines (WCAG)

Why contrast ratios are legal requirements, not just design suggestions.

Understanding AA vs AAA

The Web Content Accessibility Guidelines (WCAG) define two levels of compliance:

Level AA (Minimum)

Requires a ratio of 4.5:1 for normal text. This ensures readability for people with moderately low vision.

Level AAA (Enhanced)

Requires a ratio of 7:1. This is the gold standard for long-form content and high-priority information.

The Impact of Compliance

Accessibility benefits everyone, not just those with visual impairments. High contrast improves readability on mobile screens. If you want to see how these ratios affect actual UI, try our Design Visualizer.

  • Mobile screens in bright sunlight
  • Low-quality projectors in meeting rooms
  • Devices with "Night Mode" or dim brightness

*Legal Note: Many jurisdictions, including the EU and parts of the US (Section 508), legally require government and public sector sites to meet WCAG AA standards.

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Need to build a full accessible color system? Try our Tailwind Scale Generator or our Design System Builder.

Accessibility & Contrast FAQ

Q.What is WCAG 2.1?

WCAG (Web Content Accessibility Guidelines) is the international standard for web accessibility. It defines three levels of conformance: A (lowest), AA (mid-range), and AAA (highest). Most modern websites aim for AA compliance.

Q.What is a good contrast ratio?

For normal text, WCAG AA requires a ratio of at least 4.5:1. For large text (18pt+), the requirement is 3:1. We recommend aiming for 7:1 (AAA) for critical reading content.

Q.Why does my blue button fail on white?

Pure blue on white often has a lower ratio than expected. Try using our Color Picker to find a slightly darker shade that passes the test.

Q.Does this check color blindness?

This tool checks contrast. To see how your colors look to color-blind users, use the 'Simulate' feature in our Visualizer Mode.