Frontend Accessibility

WCAG compliance requires semantic HTML, proper ARIA attributes, keyboard navigation, and color contrast. Use correct HTML elements for interactive components, add ARIA roles and live regions where needed, ensure all features work via keyboard, and verify color contrast ratios meet WCAG AA or AAA standards.

Keyboard navigation requires managing focus within modals, trapping it to prevent users escaping accidentally, and returning focus when closed. For accordions, ensure each header is keyboard-accessible and announce expanded/collapsed state to screen readers using ARIA attributes like aria-expanded.

Provide descriptive alt text for all images that conveys meaning without repetition. For forms, associate labels with inputs using proper HTML, add aria-describedby for error messages, and use aria-live regions to announce validation feedback to screen reader users.

Skip links let users bypass repetitive content and jump to main content, improving keyboard navigation. Semantic HTML—using nav, main, header, footer, button, and form elements—provides structure screen readers recognize, reducing cognitive load and improving overall accessibility.

All frameworks require semantic HTML, ARIA attributes, and keyboard event handling. Ensure focus management works across client-side routing, test with screen readers, validate color contrast, and include proper labeling. Framework-agnostic principles like semantic structure apply universally.

Color contrast ensures text is readable for users with low vision or color blindness. WCAG AA requires 4.5:1 contrast for normal text and 3:1 for large text; AAA requires 7:1 and 4.5:1 respectively. Use contrast checker tools to verify ratios during design and development.