| Target Standard Track | Web (HTML) | Non-Web Docs | Software UI | Hardware Platforms |
|---|---|---|---|---|
| W3C WCAG 2.2 Matrix | ✓ Direct Baseline | WCAG2ICT Guidance | WCAG2ICT Guidance | ✘ Not Covered |
| Revised Section 508 | ✓ Chapter 5 (via WCAG 2.0) | ✓ Chapter 6 (Electronic Docs) | ✓ Chapter 5 (Applications) | ✓ Chapter 4 (Stationary Platforms) |
| European EN 301 549 | ✓ Clause 9 (via WCAG 2.1) | ✓ Clause 10 (Downloadable PDFs) | ✓ Clause 11 (Interoperability) | ✓ Clause 8 (Hardware/Kiosks) |
| W3C WCAG 3.0 (Silver) | ★ Guidelines Draft | ★ Guidelines Draft | ★ Guidelines Draft | ★ Guidelines Draft |
W3C WCAG 2.2 Matrix
W3C WCAG 2.2 Matrix
✓ Direct Baseline
WCAG2ICT Guidance
WCAG2ICT Guidance
✘ Not Covered
Revised Section 508
Revised Section 508
✓ Chapter 5 (via WCAG 2.0)
✓ Chapter 6 (Electronic Docs)
✓ Chapter 5 (Applications)
✓ Chapter 4 (Stationary Platforms)
European EN 301 549
European EN 301 549
✓ Clause 9 (via WCAG 2.1)
✓ Clause 10 (Downloadable PDFs)
✓ Clause 11 (Interoperability)
✓ Clause 8 (Hardware/Kiosks)
W3C WCAG 3.0 (Silver)
W3C WCAG 3.0 (Silver)
★ Guidelines Draft
★ Guidelines Draft
★ Guidelines Draft
★ Guidelines Draft
Critical Procurement Exceptions & Scoping Safe Harbors:
- The 501.1 Web Application Safe Harbor: Web applications are completely exempt from platform interoperability compliance metrics (Chapters 502/503) if they do not have access to native platform accessibility features, provided they conform fully with WCAG 2.0 Level A and AA.
- The 4.1.1 Parsing Reality Trap: While WCAG 2.2 formally removed 4.1.1, it remains a binding legal requirement for Section 508 and EN 301 549 audits because federal and European frameworks are legally tied to WCAG 2.0 and 2.1 iterations respectively.
- Stationary Control Bounds (EN 8.3 / Sec 508 407.8): Physical interaction controls on shared stationary ICT equipment (such as check-in kiosks) must maintain clear operational heights between 300 mm (15 in) minimum and 1220 mm (48 in) maximum for unobstructed access parameters.
Core Web Accessibility Principles (POUR Matrix):
1. Perceivable: Information and user interface components must be presentable to users in ways they can perceive (cannot be invisible to all of their senses).
2. Operable: User interface components and navigation must be operable (the interface cannot require interaction that a user cannot perform).
3. Understandable: Information and the operation of the user interface must be understandable (users must be able to comprehend the content and operation).
4. Robust: Content must be robust enough that it can be interpreted reliably by a wide variety of user agents, including assistive technologies.
CRITICAL SEIZURE SAFEGUARDS (Guideline 2.3 Operable - Photosensitivity Limits):
Level AA Baseline Criteria (SC 2.3.1):
Web components are permitted to flash or flicker only if the active animation area falls below the general flash/red-flash physical dimensions threshold, or if the calculated luminance shift remains within mathematically safe parameters.
Level AAA Enhanced Criteria (SC 2.3.2):
Removes all mathematical area and luminance exceptions. Enforces a strict, unconditional ceiling: Content must not contain any animation, stroboscopic media, or transitions that cycle more than three times within any single one-second window.