Accessibility Contrast Audit
by CANTAGESTUDIO
[Design System] Quantitative accessibility audit for UI - contrast ratios, font sizes, tap targets, heading hierarchy. Use when (1) checking WCAG color contrast compliance, (2) auditing text sizes for readability, (3) validating touch/click target sizes, (4) reviewing heading structure and landmarks, (5) user asks to 'check accessibility', 'audit contrast', 'WCAG compliance', or 'a11y check'.
Skill Details
Repository Files
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name: accessibility-contrast-audit description: "[Design System] Quantitative accessibility audit for UI - contrast ratios, font sizes, tap targets, heading hierarchy. Use when (1) checking WCAG color contrast compliance, (2) auditing text sizes for readability, (3) validating touch/click target sizes, (4) reviewing heading structure and landmarks, (5) user asks to 'check accessibility', 'audit contrast', 'WCAG compliance', or 'a11y check'."
Accessibility & Contrast Audit
Quantitative accessibility checks for contrast, font size, hit areas, and semantic structure.
Quick Start
python3 scripts/audit_accessibility.py --source src/ --tokens tokens.json
WCAG Standards Reference
| Criterion | Level AA | Level AAA |
|---|---|---|
| Normal text contrast | 4.5:1 | 7:1 |
| Large text contrast (18px+ or 14px bold) | 3:1 | 4.5:1 |
| UI components/graphics | 3:1 | 3:1 |
| Minimum touch target | 44×44px | 44×44px |
| Minimum font size (body) | 16px | 16px |
Problem Types
| Type | Severity | Description |
|---|---|---|
low-contrast |
error | Text/background contrast below WCAG threshold |
text-too-small |
warning | Font size below recommended minimum |
hit-area-too-small |
warning | Touch/click target below 44×44px |
heading-skip |
warning | Heading levels skipped (h1→h3) |
missing-alt |
error | Image missing alt text |
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