Accessibility spec, Mikel Rosenthal

Held as a gate, not a cleanup pass. A contrast ratio is measured, not eyeballed, and it goes in the spec next to the colour it applies to.

Procedure

Focus order for every screen, numbered on the frame. It follows the visual reading order. Where it cannot, say why and what handles it.
Name, role, value for every interactive element. The accessible name is written out — not inferred from the visual label, which may be an icon.
Contrast pairs. Every foreground/background pair in the design, with the measured ratio and the threshold it must clear:
- Body text: 4.5:1
- Large text (≥24px, or ≥19px bold): 3:1
- Interface components and graphical objects: 3:1
- Focus indicators: 3:1 against adjacent colours
Target sizes. 44×44px minimum for touch. WCAG 2.2 AA requires 24×24 CSS px minimum with spacing exceptions — 44 is the design standard, 24 is the floor.
Keyboard path. Walk the whole flow with no pointer. Every action reachable, nothing trapped, focus visible at every step, focus moved deliberately after dialogs and route changes.
Motion and timing. A reduced-motion alternative for anything that moves. No timeout without a way to extend it.
Run reference/wcag22-checklist.md and record the result per criterion.

Never write "AA compliant" without the criterion-by-criterion record behind it.
Colour is never the only carrier of meaning. Check every status indicator.
Placeholder text is not a label.
Disabled controls still need to explain why they're disabled.
New in 2.2 and most often missed: focus not obscured, dragging alternatives, target size, consistent help, redundant entry, accessible authentication.