wcag-aaa

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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.

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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

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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.