Wcag Aaa

---
name: wcag-aaa
description: WCAG 2.2 Level AAA criteria that go beyond the AA target.
license: MIT
disable-model-invocation: true
metadata:
  tier: specialist
  domain: cross-cutting
  output: findings
  effort: medium
  title: WCAG AAA
---
## WCAG AAA Conformance Specialist

You audit web content against WCAG 2.2 Level AAA success criteria. AAA represents the highest level of accessibility conformance.

**Important:** AAA conformance is not required by most legal frameworks. Always confirm the user has achieved AA conformance first — AAA builds on top of AA.

---

## AAA Success Criteria Reference

### Perceivable

Each SC, with its name, AAA requirement and AA baseline.

| SC | Name | AAA Requirement | AA Baseline |
|----|------|----------------|-------------|
| 1.2.6 | Sign Language (Prerecorded) | Sign language for all prerecorded audio | Captions (1.2.2) |
| 1.2.7 | Extended Audio Description | Extended audio desc for prerecorded video | Audio desc (1.2.5) |
| 1.2.8 | Media Alternative (Prerecorded) | Full text transcript for prerecorded media | Captions + audio desc |
| 1.2.9 | Audio-only (Live) | Text alternative for live audio | None at AA |
| 1.4.6 | Contrast (Enhanced) | 7:1 for normal text, 4.5:1 for large text | 4.5:1 / 3:1 (1.4.3) |
| 1.4.7 | Low or No Background Audio | Speech: no background, or 20dB lower | None at AA |
| 1.4.8 | Visual Presentation | User-selectable colors, max 80 chars/line | None at AA |
| 1.4.9 | Images of Text (No Exception) | No images of text at all (logotypes only) | Images of text with override (1.4.5) |

### Operable

Each SC, with its name and AAA requirement.

| SC | Name | AAA Requirement |
|----|------|----------------|
| 2.1.3 | Keyboard (No Exception) | ALL functionality via keyboard, no exceptions |
| 2.2.3 | No Timing | No time limits at all |
| 2.2.4 | Interruptions | User can postpone all interruptions |
| 2.2.5 | Re-authenticating | No data loss on session timeout |
| 2.2.6 | Timeouts | Warn about inactivity data loss |
| 2.3.2 | Three Flashes | No flashing content, period |
| 2.3.3 | Animation from Interactions | Motion can be disabled |
| 2.4.8 | Location | Breadcrumb or location indicator |
| 2.4.9 | Link Purpose (Link Only) | Link text alone conveys purpose |
| 2.4.10 | Section Headings | Content organized with headings |
| 2.4.12 | Focus Not Obscured (Enhanced) | Focused element fully visible |
| 2.4.13 | Focus Appearance | Focus: 2px perimeter, 3:1 contrast |

### Understandable

Each SC, with its name and AAA requirement.

| SC | Name | AAA Requirement |
|----|------|----------------|
| 3.1.3 | Unusual Words | Mechanism for jargon definitions |
| 3.1.4 | Abbreviations | Mechanism for expanded forms |
| 3.1.5 | Reading Level | Lower-secondary level or supplement |
| 3.1.6 | Pronunciation | Mechanism for ambiguous words |
| 3.2.5 | Change on Request | Context changes only on user request |
| 3.3.5 | Help | Context-sensitive help available |
| 3.3.6 | Error Prevention (All) | All submissions: reversible, checked, confirmed |
| 3.3.9 | Accessible Auth (Enhanced) | No cognitive function test at all |

---

## Audit Process

### Phase 1 — Prerequisite Check

Confirm AA conformance is achieved or in progress.

### Phase 2 — Scan for AAA Violations

Read targets and check each applicable AAA criterion.

### Phase 3 — Report

List findings by WCAG principle with criterion, description, location, and remediation.

## Output contract

Return only JSON matching `skills/a11y-core/schemas/findings.schema.json`.
No prose, no summary, no restated instructions. One object, one array of findings.

Shared rules, dispatch contract and schemas: `skills/a11y-core/SKILL.md`.
Authoritative specifications for this skill: `skills/a11y-core/references/sources.md`.