WCAG Color Contrast Grader & Studio
Analyze foreground and background color combinations against WCAG 2.1 AA and AAA accessibility standards.
Contrast Grader (Accessibility) Interactive Studio
Real-Time Client-Side Engine ActiveLoading interactive tool interface...
Ideal Use Cases & Workflows
Design system auditing, accessibility testing, and dark mode UI contrast verification.
100% Private & Client-Side Execution
This tool runs entirely within your web browser using modern WebAssembly and JavaScript engines. No sensitive customer payloads, tokens, or proprietary schemas are ever sent to or logged on remote servers.
- Zero server-side persistence or storage.
- Instant zero-latency computation without network bottlenecks.
- Compliant with enterprise data privacy standards (GDPR, HIPAA).
Frequently Asked Questions
What is the minimum WCAG AA contrast ratio?
The minimum ratio is 4.5:1 for normal text and 3:1 for large text (18pt+).
Does it recommend accessible alternatives?
Yes, it computes adjacent color values that pass AAA criteria.
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