Accessibility Guide
Building inclusive digital experiences benefits everyone. This guide covers core principles, practical techniques, and tools to make your websites perceivable, operable, understandable, and robust.
Four Core Principles (WCAG)
- Perceivable: Provide text alternatives, captions, and sufficient contrast.
- Operable: Ensure all functionality is keyboard‑accessible and give users enough time.
- Understandable: Use clear language, predictable navigation, and help users avoid errors.
- Robust: Write semantic HTML so assistive technologies can reliably interpret content.
Semantic HTML & ARIA
Use native elements whenever possible. Add ARIA attributes only when native semantics fall short.
<button aria-expanded="false">Show details</button>
<section aria-labelledby="details-heading">
<h2 id="details-heading">Details</h2>
…
</section>
Color & Contrast
Maintain a minimum contrast ratio of 4.5:1 for normal text and 3:1 for large text.
Example of sufficient contrast
Keyboard Navigation
All interactive elements must be reachable via Tab and operable with Enter / Space. Provide a visible focus indicator.