WCAG 2.1 SC 3.2.3: Consistent Navigation (Level AA)
3.2.3 Consistent Navigation (Level AA) — what it requires, a common failure example, and how to fix it. Part of WCAG 2.1's 3.2 Predictable guideline under the Understandable principle.
WCAG 2.1 guidelines hub → Understandable → 3.2 Predictable
3.2.3 Consistent Navigation (Level AA)
Predictable is about not surprising the user. Interfaces should behave consistently, and nothing should move focus or change context without the user asking it to — this matters enormously for screen-reader and switch-device users, who lose their place entirely when something changes unexpectedly.
This page is educational technical reference material, not legal advice. Meeting WCAG 2.1 does not by itself determine legal compliance with the ADA or any other law — consult qualified counsel for legal risk questions.
Plain-language explanation: Navigation menus, search bars, and similar repeated mechanisms need to appear in the same relative order across every page they show up on — not necessarily identical wording, but a consistent structure and position.
Common failure: The main nav bar lists categories in a different order on the homepage than on category pages, or the search box moves from the header to the footer depending on which template rendered the page.
Remediation: Use one shared header/nav component across all templates instead of maintaining separate, slightly different versions per page type.
In this guideline — 3.2 Predictable: 3.2.1 On Focus (A) · 3.2.2 On Input (A) · 3.2.3 Consistent Navigation (AA) · 3.2.4 Consistent Identification (AA) · 3.2.5 Change on Request (AAA)
← Previous: 3.2.2 On Input (A) · Next: 3.2.4 Consistent Identification (AA) →
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This page is educational content about technical accessibility practice, not legal advice. Meeting WCAG 2.1 does not guarantee legal compliance with the ADA or any other law. Consult qualified counsel for legal risk questions.
This page was drafted with AI assistance and reviewed by a person for accuracy before publication.