WCAG Color Contrast & Tonal Scales
Audit accessibility contrast ratios against WCAG 2.1 AA and AAA standards in real time. Generate comprehensive tint and shade tonal systems for digital interfaces. 100% free with no login required.
Contrast Parameters
WCAG 2.1 Compliance Matrix
Display Headline Specimen (18pt+ / Bold)
Subheading & Component Label Specimen
Optimal accessibility ensures readability across high-ambient lighting, low-contrast mobile screens, and assistive visual contexts. Test your brand typography across multiple color combinations.
Tonal Scales (Click to Copy HEX)
How It Works
Select Foreground & Background Tokens
Enter any two HEX color codes or auto-populate your verified Brand Kit Primary and Neutral swatches.
Instant WCAG 2.1 Compliance Audit
Relative luminance is calculated in real-time against ISO/WCAG standards across AA, AAA, and UI component benchmarks.
Generate 10-Step Tonal Scales
Inspect full chromatic tint (lightened) and shade (darkened) tonal ranges with one-click clipboard copying.
Why Use It
Universal Accessibility Assurance
Guarantee high-contrast legibility across digital interfaces, marketing collateral, and editorial print publications.
Rich UI State Systems
Extract systematically calibrated tints and shades for hover states, focus rings, disabled badges, and card surfaces.
Clear PASS/FAIL Metrics
Instant visual scorecards eliminate ambiguity regarding legal compliance for normal body copy and large headline typography.
Frequently Asked Questions
WCAG AA requires a minimum 4.5:1 contrast ratio for normal body text and 3:1 for large text (18pt+). WCAG AAA is the highest accessibility benchmark, requiring 7:1 for body copy and 4.5:1 for large display text.