Digital Accessibility Commitment & Conformance
accessibility.chat is dedicated to ensuring digital accessibility for all users, including people with disabilities, targeting WCAG 2.2 Level AA conformance.
- WCAG 2.2 Level AA
- ADA Title II & III
- Section 508
- PDF/UA
- 28 CFR § 35.200
Conformance Standard
We conform to the Web Content Accessibility Guidelines (WCAG) 2.2 Level AA, and exceed it on the criteria where doing so costs the reader nothing: contrast, target size and focus appearance are all held to Level AAA. We do not claim Level AAA overall — several of its criteria, such as 1.4.8 Visual Presentation, are not met, and the conformance report says which.
Measures We Take
Each of these was measured in a real browser on 31 August 2026, not asserted from the source. Where a claim could not be backed by a measurement, it is not on this list. The Accessibility Conformance Report records what is still untested.
- A root type size set as a percentage, so a reader who has raised the default text size in their browser keeps it. Body text never falls below 16px.
- Text contrast at 7:1 or better — WCAG AAA, not AA — on every page tested, and 3:1 on the icons and field borders that carry meaning alone.
- A visible focus indicator on every focusable control: a 3px outline, verified across 314 tab stops on 11 pages.
- Semantic HTML with one h1 per page and no skipped heading levels, verified on every page.
- A skip link on every page, and a second one inside the Luke workspace that skips the chat history.
- One banner, navigation, main and contentinfo landmark per page — no duplicates, each reachable by the skip link.
- Descriptive alt text for informative images; decorative images hidden from assistive technology.
- The operating system’s reduced-motion and increased-contrast settings both honoured, and Windows High Contrast rendered correctly.
- Every control at least 44 by 44 CSS pixels unless it is a link inside a sentence — WCAG AAA target size, not the AA minimum.
- No two-dimensional scrolling at 320 CSS pixels wide, which is the 400% zoom case.
Luke Tool Coverage
Luke is a free screening and triage assistant. Depending on the request and available evidence, it combines source-linked conversation, deterministic document checks, veraPDF PDF/UA validation, and four labeled web passes: Axe, Aberio, Luke Lens, and Web Audit Lite.
| Capability | Luke Can Help With | Still Requires |
|---|---|---|
| PDF text review | Policy language, ADA/504 risk signals, remediation guidance, and summary memos. | Verification that the PDF has a usable text layer and that extracted text is complete. |
| PDF inspection | Text-layer checks, deterministic PDF/UA checks, veraPDF findings, structured QA, and remediation planning. | Visual, reading-order, assistive-technology, OCR, and remediation review. A Luke result is not PDF/UA certification. |
| Web assessment | Axe, Aberio, Luke Lens, and Web Audit Lite findings, labeled by engine with page and rule evidence. | Complete keyboard, focus, contrast, reflow, browser/AT, task-flow, and manual user testing across the site. |
Feedback & Contact
We welcome your feedback on the accessibility of accessibility.chat. If you encounter accessibility barriers or need assistance:
Contact Platform Accessibility Team