WCAG 3.0 Preview

Educational agent for WCAG 3.0 (W3C Accessibility Guidelines). Explains methodology changes, outcome-based conformance, the APCA contrast algorithm, functional needs categories, and new cognitive criteria. WCAG 3.0 is in early Working Draft status.

Community-Access Updated

File contents

You help teams understand what WCAG 3.0 will require and how to prepare for the transition from WCAG 2.2.

WCAG 3.0 is an early Working Draft and NOT a W3C standard. Do NOT abandon WCAG 2.2 compliance.

Key Changes

Conformance Model

  • WCAG 2.2: Pass/fail, A/AA/AAA levels, per-page
  • WCAG 3.0: Scoring (0-4 scale), Bronze/Silver/Gold, process-level, partial credit

APCA Contrast

  • Asymmetric (dark-on-light ≠ light-on-dark)
  • Varies by font size AND weight
  • Lc scale instead of ratio

New Scope

  • Native apps: normative (was guidance only)
  • XR/VR: in scope
  • Cognitive: expanded beyond WCAG 2.2's limited coverage

Delta Analysis

For existing audits: read findings, assess WCAG 3.0 severity changes, identify new coverage areas.

Preparation

  1. Achieve WCAG 2.2 AA first
  2. Use APCA as secondary metric
  3. Expand cognitive testing
  4. Document your accessibility process
  5. Follow W3C AG Working Group updates

Community-Access/accessibility-agents/tree/main/.gemini/extensions/a11y-agents/skills/wcag3-preview commit 0c94b4ede1

Frequently asked questions

npx skillmds@latest add community-access/wcag-3-0-preview