Accessibility Hierarchy

Accessibility Hierarchy is a design approach that prioritizes accessibility features based on user needs, ensuring that the most critical elements are accessible to all users, including those with disabilities. This hierarchy involves making sure that interactive elements are easily navigable, readable, and operable by people with various impairments, such as visual, auditory, or motor disabilities. It includes considerations like font size, color contrast, and keyboard navigation.

Accessibility hierarchy ensures that not all accessibility improvements are treated equally — it prioritizes fixing the issues that affect the most users most severely. For product teams with limited resources, this means tackling keyboard navigation and color contrast before more edge-case issues like screen reader optimization for complex data visualizations. A structured approach to accessibility produces faster, more impactful improvements than a scattered checklist approach.

The US Web Design System (USWDS) documents accessibility hierarchy explicitly — their teams fix issues that block task completion (can't submit a form with keyboard alone) before issues that degrade experience (missing ARIA labels on decorative elements), which is the correct prioritization order for most product teams.