WCAG Color Contrast Checker & UI Simulator
Test color combinations for accessibility compliance. Simulate visual fatigue and ensure your UI meets WCAG 2.2 standards.
Real-time UI Preview
Card Title
This is preview text showing how your color combination looks in a real card component.
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Visual UI Accessibility Simulator
Unlike standard contrast checkers that only show numbers, our tool simulates how your color choices perform in real UI components. See immediately if your text, buttons, and forms are readable.
Accessibility Standards (WCAG 2.2)
We follow the latest Web Content Accessibility Guidelines. A ratio of 4.5:1 is required for normal text (Level AA), while large text needs at least 3:1. For the highest accessibility standard (AAA), aim for 7:1 contrast ratio.
Simulating Visual Fatigue and Blur
Poor contrast becomes even more challenging for users with visual impairments, color blindness, or viewing your site in bright sunlight. Our simulator helps you see these potential issues before your users do.
Frequently Asked Questions
What is a passing contrast ratio for text?
According to WCAG 2.2, a ratio of at least 4.5:1 is required for normal text (Level AA). For large text (18pt or 14pt bold), the minimum is 3:1. Our tool simulates visual fatigue to help you see the difference between barely passing and comfortably readable.
What is WCAG contrast standard?
WCAG suggests normal text contrast of at least 4.5:1. Our simulator can show you how different lighting conditions and visual fatigue affect readability beyond just the numbers.
Found good colors? Explore their relationships using our
Interactive Color Wheel