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Accessibility Patterns

A compact web accessibility reference covering WCAG 2.2 AA criteria, ARIA patterns, keyboard navigation and axe-core testing.

Design & UIIntermediate★ 534⑂ 44AI score 7/10Last updated: Aug 8, 2026

What it does

  • WCAG 2.2 AA criteria tables: Perceivable / Operable / Understandable rules with success-criterion numbers (alt text, 4.5:1 contrast, visible focus, 24×24px target size, etc.).
  • Correct ARIA snippets: dialog (role="dialog", aria-modal), tabs (role="tablist"), and live regions (aria-live) — the markup teams most often get wrong.
  • Keyboard navigation: a ready-to-paste React useFocusTrap hook for modals and dialogs.
  • Skip links & motion: skip-to-content pattern plus a prefers-reduced-motion CSS block.
  • Testing & checklist: npx @axe-core/cli and Lighthouse audit commands, a 10-item pre-ship checklist, and a list of common anti-patterns.

Who it's for

  • Frontend developers working in React/Next.js or plain HTML/CSS
  • Teams shipping products that must meet accessibility regulations (gov, finance, edu)
  • Design system and component library maintainers doing reviews
  • Teams starting accessibility work who need a concrete starting checklist

Examples

  1. Fix a modal: "Refactor this Dialog per accessibility-patterns" → Claude adds aria-modal, aria-labelledby and wires in the focus trap hook.
  2. Pre-release audit: "Audit this page markup against the checklist" → flags missing alt text, color-only information, removed focus outlines.
  3. CI integration: "Add an accessibility gate with axe-core and Lighthouse" → builds a pipeline step from the CLI commands in the doc.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/vibeeval/vibecosystem/HEAD/skills/accessibility-patterns/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the skills/accessibility-patterns folder from the GitHub repo vibeeval/vibecosystem into my ~/.claude/skills/accessibility-patterns/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/vibeeval/vibecosystem.git /tmp/vibecosystem && mkdir -p ~/.claude/skills && cp -r /tmp/vibecosystem/skills/accessibility-patterns ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal.
  2. Clone the repository into a temp folder: git clone https://github.com/vibeeval/vibecosystem.git /tmp/vibecosystem
  3. Create your skills directory: mkdir -p ~/.claude/skills
  4. Copy just this skill: cp -r /tmp/vibecosystem/skills/accessibility-patterns ~/.claude/skills/
  5. Verify with ls ~/.claude/skills/accessibility-patterns — you should see SKILL.md.
  6. Restart Claude Code and try: "Review this component for WCAG 2.2 AA accessibility."
  7. (Optional) To use the automated checks, confirm the tooling works: npx @axe-core/cli --version.
View source on GitHub ↗License: MIT