#accessibility.chat
accessibility.chat — Luke AI Accessibility Intelligence Platform & Research Engine
PLATFORM ACCESSIBILITY STATEMENT

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.

88+
DOJ Consent Decrees
86
WCAG 2.2 Criteria
100% Grounded
CORS Framework

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.

CapabilityLuke Can Help WithStill Requires
PDF text reviewPolicy 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 inspectionText-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 assessmentAxe, 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