Agent-Skills.md

Agent Skills: Accessibility Audit

Audit design components and generated code for WCAG 2.1 compliance including color contrast, touch targets, and screen reader compatibility

UncategorizedID: arustydev/ai/accessibility-audit

Repository

arustydev/ai
aRustyDevLicense: AGPL-3.0
72

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pnpm dlx add-skill https://github.com/aRustyDev/agents/tree/HEAD/content/plugins/frontend/design-to-code/skills/accessibility-audit

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content/plugins/frontend/design-to-code/skills/accessibility-audit/SKILL.md

Skill Metadata

Name
accessibility-audit
Description
Audit design components and generated code for WCAG 2.1 compliance including color contrast, touch targets, and screen reader compatibility

Accessibility Audit

Audit design components and generated code for WCAG 2.1 compliance. Check color contrast, touch targets, screen reader compatibility, and keyboard navigation.

WCAG Compliance Levels

| Level | Description | Target | |-------|-------------|--------| | A | Minimum accessibility | Required | | AA | Standard compliance | Recommended | | AAA | Enhanced accessibility | Aspirational |

Color Contrast

Requirements

| Element | WCAG Level | Ratio | |---------|------------|-------| | Normal text | AA | 4.5:1 | | Large text (18px+) | AA | 3:1 | | UI components | AA | 3:1 | | Enhanced (AAA) | AAA | 7:1 |

Checking Contrast

Using design tokens:

function getContrastRatio(color1, color2) {
  const l1 = getLuminance(color1);
  const l2 = getLuminance(color2);
  const lighter = Math.max(l1, l2);
  const darker = Math.min(l1, l2);
  return (lighter + 0.05) / (darker + 0.05);
}

function getLuminance(hex) {
  const rgb = hexToRgb(hex);
  const [r, g, b] = rgb.map(c => {
    c = c / 255;
    return c <= 0.03928 ? c / 12.92 : Math.pow((c + 0.055) / 1.055, 2.4);
  });
  return 0.2126 * r + 0.7152 * g + 0.0722 * b;
}

Audit Report Format:

## Color Contrast Audit

### Passing
| Pair | Foreground | Background | Ratio | Level |
|------|------------|------------|-------|-------|
| Text on surface | #1A1A1A | #FFFFFF | 16.1:1 | AAA |
| Primary button | #FFFFFF | #2196F3 | 4.6:1 | AA |

### Failing
| Pair | Foreground | Background | Ratio | Required | Fix |
|------|------------|------------|-------|----------|-----|
| Muted text | #999999 | #F5F5F5 | 2.8:1 | 4.5:1 | Darken to #666666 |
| Disabled | #CCCCCC | #FFFFFF | 1.6:1 | 3:1 | Darken to #949494 |

Automated Tools

# Install color contrast checker
npm install -g color-contrast-checker

# Check specific colors
contrast-check "#1A1A1A" "#FFFFFF"

# Audit CSS file
npx color-contrast-audit ./styles.css

Touch Targets

Requirements

| Platform | Minimum Size | Recommended | |----------|--------------|-------------| | iOS | 44×44 pt | 48×48 pt | | Android | 48×48 dp | 56×56 dp | | Web | 44×44 px | 48×48 px |

Checking Touch Targets

Component Audit:

## Touch Target Audit

### Compliant
| Component | Size | Platform | Status |
|-----------|------|----------|--------|
| Button | 48×48 | All | ✓ |
| ListItem | 56×48 | All | ✓ |
| Checkbox | 44×44 | All | ✓ |

### Non-Compliant
| Component | Current | Required | Fix |
|-----------|---------|----------|-----|
| IconButton | 32×32 | 44×44 | Add padding |
| CloseButton | 24×24 | 44×44 | Increase hit area |
| Link (inline) | 16×16 | 44×44 | Add touch padding |

Implementation Fixes

SwiftUI:

// Bad: Small touch target
Image(systemName: "xmark")
    .frame(width: 24, height: 24)

// Good: Adequate touch target
Image(systemName: "xmark")
    .frame(width: 44, height: 44)
    .contentShape(Rectangle())

React:

// Bad: Small touch target
<button className="w-6 h-6">×</button>

// Good: Visual + touch area separated
<button className="w-11 h-11 flex items-center justify-center">
  <span className="w-6 h-6">×</span>
</button>

Screen Reader Compatibility

Requirements

  • All interactive elements must have accessible names
  • Images must have alt text (or be decorative)
  • Form inputs must have labels
  • Dynamic content must be announced

Audit Checklist

## Screen Reader Audit

### Images
| Image | Alt Text | Status |
|-------|----------|--------|
| logo.png | "Company Logo" | ✓ |
| hero.jpg | "Team collaboration" | ✓ |
| icon-arrow.svg | "" (decorative) | ✓ |
| product.png | Missing | ✗ Fix: Add alt |

### Interactive Elements
| Element | Accessible Name | Source |
|---------|-----------------|--------|
| Submit button | "Submit form" | Content |
| Close button | "Close dialog" | aria-label |
| Search input | "Search products" | Label element |
| Nav menu | Missing | ✗ Fix: Add aria-label |

### Dynamic Content
| Update | Announcement | Status |
|--------|--------------|--------|
| Form error | role="alert" | ✓ |
| Toast | aria-live="polite" | ✓ |
| Loading | "Loading..." | ✗ Fix: Add aria-busy |

ARIA Implementation

Required Attributes:

<!-- Buttons with icons only -->
<button aria-label="Close dialog">
  <svg>...</svg>
</button>

<!-- Form inputs -->
<label for="email">Email</label>
<input id="email" type="email" aria-describedby="email-hint">
<span id="email-hint">We'll never share your email</span>

<!-- Dynamic regions -->
<div role="status" aria-live="polite">
  {statusMessage}
</div>

Keyboard Navigation

Requirements

  • All interactive elements reachable via Tab
  • Visible focus indicators
  • Logical tab order
  • Escape closes modals/dialogs
  • Arrow keys for menus/lists

Focus Indicators

Requirements:

| Property | Minimum | Recommended | |----------|---------|-------------| | Contrast | 3:1 | 4.5:1 | | Width | 2px | 3px | | Offset | 0px | 2px | | Style | Solid | Any visible |

Implementation:

/* Bad: Removed focus */
:focus {
  outline: none;
}

/* Good: Custom focus */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Good: Focus ring component */
.focus-ring:focus-visible {
  box-shadow: 0 0 0 3px var(--color-focus);
}

Tab Order Audit

## Keyboard Navigation Audit

### Tab Order
1. Skip to content link ✓
2. Logo (link to home) ✓
3. Navigation items (1-5) ✓
4. Search input ✓
5. Main content starts ✓

### Focus Visibility
| Element | Has Focus Style | Contrast | Status |
|---------|-----------------|----------|--------|
| Button | Yes | 4.8:1 | ✓ |
| Link | Yes | 4.5:1 | ✓ |
| Input | Yes | 3.2:1 | ✓ |
| Checkbox | No | - | ✗ Fix |

### Keyboard Shortcuts
| Action | Key | Working |
|--------|-----|---------|
| Submit form | Enter | ✓ |
| Close modal | Escape | ✓ |
| Menu navigation | Arrow keys | ✓ |
| Skip link | Tab (first) | ✓ |

Motion and Animation

Requirements

  • Respect prefers-reduced-motion
  • No auto-playing videos with sound
  • No flashing content (3 flashes/second)
  • Provide pause controls for animation

Implementation

CSS:

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

SwiftUI:

@Environment(\.accessibilityReduceMotion) var reduceMotion

var animation: Animation? {
    reduceMotion ? nil : .spring()
}

React:

const prefersReducedMotion = window.matchMedia(
  '(prefers-reduced-motion: reduce)'
).matches;

const variants = {
  enter: prefersReducedMotion
    ? { opacity: 1 }
    : { opacity: 1, y: 0, transition: { duration: 0.3 } },
};

Audit Report Template

# Accessibility Audit Report

**Component**: ButtonComponent
**Date**: 2026-02-22
**WCAG Target**: AA

## Summary

| Category | Pass | Fail | Warnings |
|----------|------|------|----------|
| Color Contrast | 4 | 1 | 0 |
| Touch Targets | 3 | 0 | 1 |
| Screen Reader | 5 | 2 | 0 |
| Keyboard | 4 | 0 | 0 |
| Motion | 2 | 0 | 0 |
| **Total** | **18** | **3** | **1** |

## Critical Issues

### 1. Insufficient Color Contrast
- **Element**: Disabled state text
- **Current**: 2.8:1
- **Required**: 4.5:1
- **Fix**: Change `#999999` to `#767676`

### 2. Missing Accessible Name
- **Element**: Icon-only button
- **Issue**: No accessible name for screen readers
- **Fix**: Add `aria-label="Close"`

## Recommendations

1. Add focus indicators to all interactive elements
2. Increase disabled state contrast
3. Add aria-labels to icon buttons
4. Test with VoiceOver/TalkBack

## Compliance Status

| Level | Status |
|-------|--------|
| WCAG 2.1 A | ⚠️ 2 issues |
| WCAG 2.1 AA | ⚠️ 3 issues |
| WCAG 2.1 AAA | ❌ Not targeted |

Testing Tools

Automated

# axe-core CLI
npm install -g @axe-core/cli
axe https://example.com

# Lighthouse accessibility
npx lighthouse https://example.com --only-categories=accessibility

# pa11y
npx pa11y https://example.com

Manual Testing

| Tool | Platform | Purpose | |------|----------|---------| | VoiceOver | macOS/iOS | Screen reader | | TalkBack | Android | Screen reader | | NVDA | Windows | Screen reader | | Accessibility Inspector | Xcode | iOS audit | | Chrome DevTools | Web | Accessibility tree |

Integration

The accessibility-audit skill is used by:

  • design-translator: Validate generated components
  • component-spec style: Include accessibility section
  • design-system-architect: Ensure system-wide compliance