accessibility-standards

Keyboard navigation in Vue 3 requires proper tab order management, skip links, and keyboard event handlers. Set `tabindex` attributes, manage focus programmatically with `ref`, handle `keydown` events for Enter and Escape, and ensure all interactive elements are reachable without a mouse to meet WCAG 2.1 AA operability standards.

Use `aria-label`, `aria-labelledby`, and `aria-describedby` to associate form inputs with labels. For dialogs, add `role="dialog"`, `aria-modal="true"`, and `aria-labelledby` to the heading. These ARIA attributes provide semantic meaning for screen readers and assistive technologies to announce form purpose and structure.

WCAG 2.1 AA requires a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. Test your component colors using contrast checking tools, adjust CSS variables or Tailwind classes, and validate across text, backgrounds, and interactive states to ensure readability for users with low vision.

Yes. Provide descriptive `alt` text for images, use `aria-label` for charts, and add `role="img"` when appropriate. For dynamic content updates, implement `aria-live="polite"` or `aria-live="assertive"` regions to announce loading states, data changes, and results to assistive technology users.

Focus management for modals requires trapping focus within the dialog, returning focus to the trigger element on close, and providing visible focus indicators on all interactive elements. Use Vue refs to programmatically set `focus()`, listen for Escape key to close, and prevent focus from escaping outside the modal.

Yes, WCAG 2.1 AA compliance requires auditing existing components for keyboard navigation, ARIA labels, color contrast, and focus management. Incrementally add semantic HTML, skip links, visible focus states, and screen reader announcements to ensure your entire application meets accessibility standards for all users.