Web Content Accessibility Guidelines (WCAG) 2.2¶
World Wide Web Consortium. (2023). Web Content Accessibility Guidelines (WCAG) 2.2. W3C Recommendation.
Cited by¶
7 citations across 7 artifacts.
Each citation links to the sentence it supports in the citing article.
Primes¶
- Contrast
- T1: Insufficient contrast and signal loss.
This sourceSets quantitative minimum luminance-contrast ratios — 4.5:1 for normal text and 3:1 for large text at level AA, 7:1 and 4.5:1 at level AAA — supporting the claim that the otherwise vague directive 'use enough contrast' is made auditable. Date and ratios verified.
- T1: Insufficient contrast and signal loss.
Domain-specific¶
- Robust Accessibility
- Robust accessibility is the fourth of WCAG 2.x's four principles — Perceivable, Operable, Understandable, Robust — and requires that content be authored so that it remains correctly interpretable by current and future user agents and assistive technologies, including ones the author cannot test against.
This sourceThe WCAG principle 4 Robust, requiring content to be robust enough to be interpreted by a wide variety of user agents and assistive technologies and maximising compatibility with current and future ones. Specifies WCAG Principle 4's conformance criteria requiring a programmatically determinable name and role with settable states and values (SC 4.1.2) and status messages (SC 4.1.3).
SupportedVerified against a saved copy of the source
“At the top are four principles that provide the foundation for web accessibility: perceivable, operable, understandable, and robust.”
- Robust accessibility is the fourth of WCAG 2.x's four principles — Perceivable, Operable, Understandable, Robust — and requires that content be authored so that it remains correctly interpretable by current and future user agents and assistive technologies, including ones the author cannot test against.
Mechanisms¶
- Accessibility Change
- The team runs an accessibility change: it audits the portal against WCAG,
This sourceIdentifies WCAG requirements relevant to evaluating accessibility, alternative CAPTCHA modalities, and captions for prerecorded media.
- The team runs an accessibility change: it audits the portal against WCAG,
- Color Palette
- Then every swatch is held to an accessibility floor: text and icons over each color must clear a defined contrast ratio
This sourceRequires minimum contrast for text and graphical objects and forbids using color as the sole visual means of conveying information.
- Then every swatch is held to an accessibility floor: text and icons over each color must clear a defined contrast ratio
- Contrast Emphasis
- The discipline is to quiet the field first (a job for Isolation Framing), use at least two perceptual channels, and verify against a real contrast standard rather than by eye.
This sourceProvides testable contrast thresholds for visually presented text rather than relying on unaided judgment.
- The discipline is to quiet the field first (a job for Isolation Framing), use at least two perceptual channels, and verify against a real contrast standard rather than by eye.
- Grouping Audit Checklist
- For the accessibility items, anchoring them to an external standard such as WCAG gives the pass/fail an objective referent instead of reviewer taste.
This sourceProvides a stable external accessibility standard with testable success criteria and defined conformance levels.
- For the accessibility items, anchoring them to an external standard such as WCAG gives the pass/fail an objective referent instead of reviewer taste.
- UI Icon Library
- … of a bare icon — the infamous case being the three-line "menu" glyph that sighted users learned only slowly and screen-reader users could not resolve at all without a label — by never shipping the picture without its text alternative attached, in line with the requirement that non-text content carry a text equivalent.
This sourceRequires non-text content to have a text alternative that serves the equivalent purpose.
- … of a bare icon — the infamous case being the three-line "menu" glyph that sighted users learned only slowly and screen-reader users could not resolve at all without a label — by never shipping the picture without its text alternative attached, in line with the requirement that non-text content carry a text equivalent.
Verification¶
Does it exist? Not checked yet. This entry carries no identifier to resolve. It was extracted from the citation as written in the article, normalized, and deduplicated against the rest of the registry.
Does it back the claim? Read against the text for 1 of 7 citations: 1 supported. Each verdict is shown under its citation below, with what in the work backs the sentence.
Support is checked per citation rather than per work — the same source can be cited soundly in one article and wrongly in another. Per-citation recording began recently, so a citation with no recorded check is a gap in the record rather than evidence it went unchecked.
See how references were verified.
Links previously used in the corpus¶
Before the registry existed this work was also linked 1 other way.
Registry ID ref:b8a7fce0d47a · see in the full table