Elite Frontend UX Contrast Wcag 21 Aa

Sub-skill of elite-frontend-ux: Contrast (WCAG 2.1 AA) (+4).

vamseeachanta Updated

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Contrast (WCAG 2.1 AA) (+4)

Contrast (WCAG 2.1 AA)

Element Minimum ratio
Body text 4.5:1
Large text (18pt+ or 14pt bold) 3:1
UI components, icons 3:1
Focus indicators 3:1

Touch Targets

  • Minimum size: 44×44px
  • Minimum spacing between adjacent targets: 8px

Interactive Elements

  • ALL interactive elements MUST have visible focus states
  • NEVER use outline: none without a replacement
  • Tab order must be logical; avoid tabindex > 0

Forms

  • Every input MUST have an associated <label> (not just placeholder)
  • Error messages: use aria-describedby to associate with input
  • Don't disable submit buttons before first submission attempt
  • Use autocomplete attributes

Semantic HTML (first rule of ARIA: don't use ARIA if native HTML works)

<!-- CORRECT -->
<button type="button">Action</button>
<a href="/page">Navigate</a>

<!-- WRONG -->
<div
<span class="link">Navigate</span>

vamseeachanta/workspace-hub/tree/main/.agents/skills/_archive/development/elite-frontend-ux/contrast-wcag-21-aa commit a7ff36d512

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