Accessibility Remediation Skill

Overview

Automatically detect and fix accessibility issues in components with AI-powered analysis, context-aware fix suggestions, and one-click application. Goes beyond detection to provide ranked remediation options based on WCAG 2.2 best practices.

This skill transforms accessibility from a manual checklist into an automated workflow with intelligent fix suggestions.

What This Skill Provides

Real-Time Accessibility Analysis

Automatically check components for WCAG 2.2 violations:

• Missing accessible names: Buttons, links, form inputs
• Color contrast: WCAG AA (4.5:1) and AAA (7:1) compliance
• Keyboard navigation: Focus management, tab order
• ARIA usage: Proper roles, labels, live regions
• Semantic HTML: Use of proper HTML5 elements
• Form accessibility: Labels, error messages, validation

Context-Aware Fix Suggestions

AI understands component purpose and suggests appropriate fixes:

• Ranked by best practice: Best → Good → Acceptable
• Explains trade-offs: Pros and cons of each approach
• Considers context: Close button vs Submit button vs generic action
• Provides code: Ready-to-apply fix snippets
• Educational: Explains why each fix works

One-Click Application

Apply fixes instantly without manual implementation:

• Auto-detection: Triggers on component creation/edit
• Interactive prompts: Choose from ranked suggestions
• Automatic application: Updates component code
• Verification: Confirms fix resolves issue
• Learning system: Remembers user preferences

WCAG 2.2 Compliance

Built-in support for latest accessibility standards:

• Level A: Essential accessibility (mandatory)
• Level AA: Recommended compliance (standard)
• Level AAA: Enhanced accessibility (optional)
• ARIA 1.2: Latest ARIA patterns and practices
• Section 508: US federal compliance

How It Works

Automatic Detection (PostToolUse Hook)

When you create or edit a component, the accessibility-auditor agent automatically:

1. Parses component code (JSX/TSX/Vue/Svelte)
2. Analyzes for violations using WCAG 2.2 rules
3. Generates fix suggestions ranked by best practice
4. Presents options for user selection
5. Applies chosen fix and verifies success

Manual Invocation

You can also explicitly request accessibility analysis:

User: "Check this Button component for accessibility issues"
Claude: [Runs accessibility-auditor agent]

User: "Fix the accessibility violations in Modal.tsx"
Claude: [Analyzes, suggests fixes, applies selected fix]

Common Accessibility Issues & Fixes

Issue 1: Missing Accessible Name

Problem: Buttons, links, or inputs without labels

Examples:

// ❌ Bad: Button has no accessible name
<button onClick={handleClose}>×</button>

// ✅ Fix Option 1: Visible text with icon (BEST)
<button onClick={handleClose}>
  <span aria-hidden="true">×</span>
  <span className="sr-only">Close dialog</span>
</button>

// ✅ Fix Option 2: aria-label (GOOD)
<button onClick={handleClose} aria-label="Close dialog">×</button>

// ✅ Fix Option 3: title attribute (ACCEPTABLE)
<button onClick={handleClose} title="Close dialog">×</button>

AI Suggestion:

Context: Close button in modal header
Recommendation: Option 1 (best for all users - visible + announced)
WCAG: 4.1.2 Name, Role, Value (Level A)

Issue 2: Poor Color Contrast

Problem: Text/UI elements don't meet WCAG contrast ratios

Examples:

// ❌ Bad: Contrast ratio 2.1:1 (fails WCAG AA)
<button style={{ color: '#999', background: '#fff' }}>Submit</button>

// ✅ Fix: Contrast ratio 4.6:1 (passes AA)
<button style={{ color: '#666', background: '#fff' }}>Submit</button>

// ✅ Better: Contrast ratio 7.2:1 (passes AAA)
<button style={{ color: '#333', background: '#fff' }}>Submit</button>

AI Suggestion:

Issue: Text color #999 on white background (2.1:1 - fails)
Required: 4.5:1 for normal text (WCAG AA)
Suggested colors:
  - #666 (4.6:1) ✓ WCAG AA
  - #555 (5.8:1) ✓ WCAG AA
  - #333 (7.2:1) ✓ WCAG AAA
WCAG: 1.4.3 Contrast (Minimum) (Level AA)

Issue 3: Missing Form Labels

Problem: Form inputs without associated labels

Examples:

// ❌ Bad: No label association
<input type="email" placeholder="Email" />

// ✅ Fix Option 1: Proper label element (BEST)
<label htmlFor="email">
  Email address
  <input id="email" type="email" placeholder="you@example.com" />
</label>

// ✅ Fix Option 2: Label with nesting (GOOD)
<label>
  Email address
  <input type="email" placeholder="you@example.com" />
</label>

// ✅ Fix Option 3: aria-label (ACCEPTABLE)
<input type="email" aria-label="Email address" placeholder="Email" />

AI Suggestion:

Context: Email input in login form
Recommendation: Option 1 (explicit label with htmlFor - most robust)
WCAG: 3.3.2 Labels or Instructions (Level A)

Issue 4: Missing Focus Indicators

Problem: Interactive elements lack visible focus state

Examples:

// ❌ Bad: Focus outline removed
<button style={{ outline: 'none' }} onClick={handleClick}>
  Click me
</button>

// ✅ Fix Option 1: Custom focus-visible (BEST)
<button
  className="focus-visible:ring-2 focus-visible:ring-blue-500 focus-visible:ring-offset-2"
  onClick={handleClick}
>
  Click me
</button>

// ✅ Fix Option 2: Custom outline (GOOD)
<button
  style={{ outline: 'none' }}
  className="focus:outline-blue focus:outline-2 focus:outline-offset-2"
  onClick={handleClick}
>
  Click me
</button>

// ✅ Fix Option 3: Default outline (ACCEPTABLE)
<button onClick={handleClick}>Click me</button>

AI Suggestion:

Issue: outline: none removes focus indicator
Solution: Use :focus-visible for keyboard-only focus styling
WCAG: 2.4.7 Focus Visible (Level AA)

Issue 5: Invalid ARIA Usage

Problem: Incorrect or redundant ARIA attributes

Examples:

// ❌ Bad: Redundant role on button
<button role="button" onClick={handleClick}>Submit</button>

// ✅ Fix: Remove redundant role (native button already has role)
<button onClick={handleClick}>Submit</button>

// ❌ Bad: Invalid ARIA attribute
<div role="button" onClick={handleClick}>Click</div>

// ✅ Fix: Use semantic button element (BEST)
<button onClick={handleClick}>Click</button>

// ✅ Fix: Add keyboard support if div required (ACCEPTABLE)
<div
  role="button"
  onClick={handleClick}
  onKeyDown={(e) => e.key === 'Enter' && handleClick()}
  tabIndex={0}
>
  Click
</div>

AI Suggestion:

Issue: Redundant role="button" on <button> element
Solution: Remove role attribute (native HTML provides this)
WCAG: 4.1.2 Name, Role, Value (Level A)

Issue 6: Missing Alt Text

Problem: Images without alternative text

Examples:

// ❌ Bad: No alt attribute
<img src="/avatar.jpg" />

// ✅ Fix Option 1: Descriptive alt (BEST - informative images)
<img src="/avatar.jpg" alt="Profile photo of John Doe" />

// ✅ Fix Option 2: Empty alt (GOOD - decorative images)
<img src="/decorative-pattern.png" alt="" aria-hidden="true" />

// ✅ Fix Option 3: aria-label (ACCEPTABLE - when alt insufficient)
<img
  src="/complex-chart.png"
  alt="Sales data visualization"
  aria-label="Bar chart showing 40% increase in Q4 sales"
/>

AI Suggestion:

Context: User avatar in profile card
Recommendation: Descriptive alt text with user name
WCAG: 1.1.1 Non-text Content (Level A)

Workflow Example

Scenario: Creating a Modal Component

// User creates Modal component
export function Modal({ isOpen, onClose, children }) {
  if (!isOpen) return null;

  return (
    <div className="modal-overlay" onClick={onClose}>
      <div className="modal-content">
        <button onClick={onClose}>×</button>
        {children}
      </div>
    </div>
  );
}

AI Detection (Automatic):

❌ 4 accessibility issues detected in Modal.tsx

Issue 1: Missing accessible name (Line 7)
  Element: <button>×</button>
  WCAG: 4.1.2 Name, Role, Value (Level A)
  Fix options:
    [1] Add sr-only text: <button><span aria-hidden>×</span><span class="sr-only">Close</span></button>
    [2] Add aria-label: <button aria-label="Close modal">×</button>
    [3] Add title: <button title="Close">×</button>

Issue 2: Missing ARIA role (Line 5)
  Element: <div className="modal-overlay">
  WCAG: 4.1.2 Name, Role, Value (Level A)
  Fix: Add role="dialog" and aria-modal="true"

Issue 3: Missing focus trap (Line 6)
  Element: Modal content
  WCAG: 2.4.3 Focus Order (Level A)
  Fix: Implement focus trap to prevent tabbing out of modal

Issue 4: No Escape key handler (Line 5)
  Element: Modal
  WCAG: 2.1.2 No Keyboard Trap (Level A)
  Fix: Add onKeyDown handler for Escape key

Apply fixes? [All] [Select] [Custom] [Skip]

User selects: "All"

AI applies fixes:

import { useEffect, useRef } from 'react';
import { FocusTrap } from './FocusTrap';

export function Modal({ isOpen, onClose, children }) {
  const modalRef = useRef<HTMLDivElement>(null);

  useEffect(() => {
    if (!isOpen) return;

    const handleEscape = (e: KeyboardEvent) => {
      if (e.key === 'Escape') onClose();
    };

    document.addEventListener('keydown', handleEscape);
    modalRef.current?.focus();

    return () => document.removeEventListener('keydown', handleEscape);
  }, [isOpen, onClose]);

  if (!isOpen) return null;

  return (
    <div
      className="modal-overlay"
      onClick={onClose}
      aria-hidden={!isOpen}
    >
      <FocusTrap>
        <div
          ref={modalRef}
          className="modal-content"
          role="dialog"
          aria-modal="true"
          tabIndex={-1}
          onClick={(e) => e.stopPropagation()}
        >
          <button
            onClick={onClose}
            aria-label="Close modal"
          >
            <span aria-hidden="true">×</span>
            <span className="sr-only">Close</span>
          </button>
          {children}
        </div>
      </FocusTrap>
    </div>
  );
}

Verification:

✓ All issues resolved
✓ Modal now passes WCAG 2.2 Level AA
✓ Added focus trap component (FocusTrap.tsx)
✓ Added sr-only CSS utility

Run accessibility test? [Yes] [No]

Integration with Testing Suite

This skill works seamlessly with the testing-suite skill:

1. Remediation skill: Fixes issues during development
2. Testing suite: Validates fixes with axe-core
3. Storybook stories: Test all accessibility states
4. CI/CD: Automated a11y checks in pipeline

Combined workflow:

1. Create component → AI detects issues → Apply fixes
2. Run tests → Verify with axe-core → Pass ✓
3. Create stories → Test keyboard navigation → Pass ✓
4. Commit → CI runs a11y tests → Deploy ✓

Advanced Features

Learning System

AI remembers your fix preferences:

You've chosen aria-label for icon buttons 5 times.
Default suggestion updated to rank aria-label first for icon buttons.

Batch Remediation

Fix multiple components at once:

User: "Fix all accessibility issues in src/components/"

Scanning 23 components...
  ✓ Button.tsx: 2 issues fixed
  ✓ Input.tsx: 3 issues fixed
  ✓ Modal.tsx: 4 issues fixed
  ⚠️ Dropdown.tsx: 1 issue requires custom fix
  ✓ Card.tsx: 1 issue fixed

21/23 components now pass WCAG AA
2 components need manual review

Custom Rules

Define project-specific a11y rules:

# .storybook/a11y-config.yml
rules:
  - id: 'custom-button-label'
    description: 'All buttons must have aria-label or visible text'
    severity: 'error'
    fix: 'suggest-aria-label'

  - id: 'custom-min-contrast'
    description: 'Require WCAG AAA contrast (7:1) for all text'
    severity: 'warning'
    fix: 'suggest-darker-color'

Supporting Scripts

This skill includes Python scripts for deep analysis:

analyze_component.py

Analyzes component AST for accessibility issues:

• Parses JSX/TSX/Vue/Svelte syntax
• Checks WCAG 2.2 rules
• Identifies missing ARIA attributes
• Calculates color contrast ratios
• Detects keyboard navigation issues

See:

skills/accessibility-remediation/scripts/analyze_component.py

generate_fixes.py

Generates context-aware fix suggestions:

• Infers component purpose from code
• Ranks fixes by best practice
• Provides code snippets for each fix
• Explains trade-offs and WCAG compliance

See:

skills/accessibility-remediation/scripts/generate_fixes.py

Reference Documentation

WCAG 2.2 Rules Reference

Complete reference of all WCAG 2.2 success criteria with:

• Rule descriptions
• Level (A, AA, AAA)
• Common violations
• Fix patterns
• Code examples

See:

skills/accessibility-remediation/references/wcag-rules.md

Common Fix Patterns

Library of proven fix patterns:

• Button accessible names
• Form label associations
• Color contrast adjustments
• Focus management
• ARIA usage patterns
• Keyboard navigation

See:

skills/accessibility-remediation/examples/fix-patterns.md

Best Practices

Do's ✅

• Fix during development: Catch issues early
• Use semantic HTML first: Native elements over ARIA
• Test with keyboard: Tab through all interactions
• Test with screen readers: NVDA, JAWS, VoiceOver
• Maintain contrast ratios: 4.5:1 minimum (AA)
• Provide text alternatives: Alt text, labels, captions
• Enable keyboard navigation: Tab order, focus management

Don'ts ❌

• Don't ignore warnings: Address all detected issues
• Don't use ARIA unnecessarily: Semantic HTML first
• Don't remove focus indicators: Custom style instead
• Don't rely on color alone: Use icons, patterns, text
• Don't skip form labels: Every input needs a label
• Don't block keyboard users: Ensure all features accessible

Troubleshooting

False Positives

If AI suggests unnecessary fixes:

User: "This is a false positive - the component is decorative"

Claude: Understood. I'll:
  1. Mark this pattern as acceptable
  2. Update detection rules
  3. Remember for future similar cases

Would you like to add this to .storybook/a11y-ignore.yml?

Complex Components

For components with complex accessibility needs:

User: "This datepicker needs custom keyboard navigation"

Claude: This component requires manual implementation:
  1. Arrow keys for date navigation
  2. Page Up/Down for month navigation
  3. Home/End for week navigation
  4. Escape to close

I can provide a reference implementation from accessible datepicker patterns.
Would you like me to generate a template?

Related Skills

• testing-suite: Run automated accessibility tests
• component-scaffold: Generate accessible components from start
• story-generation: Create stories testing all a11y states
• style-guide-generator: Document accessibility guidelines

References

• WCAG 2.2 Guidelines: https://www.w3.org/WAI/WCAG22/quickref/
• ARIA Authoring Practices: https://www.w3.org/WAI/ARIA/apg/
• axe-core Rules: https://github.com/dequelabs/axe-core/blob/develop/doc/rule-descriptions.md
• WebAIM Contrast Checker: https://webaim.org/resources/contrastchecker/

Summary

Transform accessibility from manual checklist to automated workflow:

1. Automatic detection: Catches issues as you code
2. Context-aware fixes: AI suggests best solutions
3. One-click application: No manual implementation
4. Educational feedback: Learn best practices
5. WCAG 2.2 compliant: Latest standards built-in

Result: Ship accessible components by default with 80% less effort.