#wcag

Ensure product accessibility compliance following WCAG 2.1 standards. WCAG principles (POUR): 1. Perceivable: information must be presentable in ways users can perceive. 2. Operable: interface components must be operable by all users. 3. Understandable: information and UI operation must be understandable. 4. Robust: content must be robust enough for various assistive technologies. Key requirements: 1. Color contrast: 4.5:1 ratio for normal text, 3:1 for large text. 2. Keyboard navigation: all functionality accessible via keyboard. 3. Alt text: meaningful descriptions for images. 4. Focus indicators: visible outline when tabbing through elements. 5. Semantic HTML: proper heading hierarchy, form labels. Testing approach: 1. Automated scanning: axe-core, WAVE for initial detection. 2. Manual testing: keyboard-only navigation, screen reader testing. 3. User testing: recruit users with disabilities. Implementation: integrate accessibility into design system, developer training, legal compliance for ADA/Section 508.