Accessibility

Accessibility

Comprehensive patterns for building accessible web applications: WCAG 2.2 AA compliance, keyboard focus management, React Aria component patterns, native HTML-first philosophy, cognitive inclusion, and user preference honoring. Each category has individual rule files in rules/ loaded on-demand.

Quick Reference

Total: 10 rules across 6 categories

Quick Start

// Semantic HTML with ARIA
<main>
  <article>
    <header><h1>Page Title</h1></header>
    <section aria-labelledby="features-heading">
      <h2 id="features-heading">Features</h2>
    </section>
  </article>
</main>

// Focus trap with React Aria
import { FocusScope } from 'react-aria';

<FocusScope contain restoreFocus autoFocus>
  <div role="dialog" aria-modal="true">
    {children}
  </div>
</FocusScope>

WCAG Compliance

WCAG 2.2 AA implementation for inclusive, legally compliant web applications.

POUR Exit Criteria

Concrete pass/fail thresholds for each WCAG 2.2 AA criterion — replaces vague "meets requirements" checks.

Static Anti-Patterns

Grep-able anti-patterns detectable via static analysis or code review — no browser needed.

Focus Management

Keyboard focus management patterns for accessible interactive widgets.

Focus trap and restoration mechanics are upstream's job: use React Aria <FocusScope contain restoreFocus autoFocus> (see Upstream coverage). When React Aria is unavailable, copy scripts/focus-trap-template.tsx; the house rules for both live in references/ork-delta.md.

React Aria

Adobe React Aria hooks for building WCAG-compliant interactive UI.

Overlay hook APIs (useModalOverlay, useTooltip, usePopover) are documented upstream (see Upstream coverage); the house overlay recipe (FocusScope plus shared motion presets) is in references/ork-delta.md.

Modern Web Accessibility

2026 best practices: native HTML first, cognitive inclusion, and honoring user preferences.

Cognitive inclusion (ADHD/autism/dyslexia support) is covered upstream by W3C COGA (see Upstream coverage); the house cognitive-load ceilings (notification cap, nav-item cap, reading-level targets) are in references/ork-delta.md.

Key Decisions

Anti-Patterns (FORBIDDEN)

• Div soup: Using <div> instead of semantic elements (<nav>, <main>, <article>)
• Color-only information: Status indicated only by color without icon/text
• Missing labels: Form inputs without associated <label> or aria-label
• Keyboard traps: Focus that cannot escape without Escape key
• Removing focus outline: outline: none without replacement indicator
• Positive tabindex: Using tabindex > 0 (disrupts natural order)
• Div with onClick: Using <div onClick> instead of <button> or useButton
• Manual focus in modals: Using useEffect + ref.focus() instead of FocusScope
• Auto-playing media: Audio/video that plays without user action
• ARIA overuse: Using ARIA when semantic HTML suffices

Upstream coverage (do not restate)

Vendor tutorials, API references, and criterion walkthroughs removed in the 2026-07-31 wrap-plus-delta thinning. Consult the first-party source; only the ork delta (floors, scars, house decisions) lives in references/ork-delta.md.

Detailed Documentation

Related Skills

• ork:testing-e2e - E2E testing patterns including accessibility testing
• design-system-starter - Accessible component library patterns
• ork:i18n-date-patterns - RTL layout and locale-aware formatting
• motion-animation-patterns - Reduced motion and animation accessibility