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ARIA Labels Explained: When, Why, and How to Use Them

A practical guide to ARIA labels and attributes. Learn when to use aria-label, aria-labelledby, and aria-describedby to improve screen reader accessibility.

James Chen

James Chen

Accessibility Consultant

9 min read
Code editor showing HTML with ARIA attributes highlighted
Code editor showing HTML with ARIA attributes highlighted

What Are ARIA Labels?

ARIA (Accessible Rich Internet Applications) labels are HTML attributes that provide additional context to assistive technologies. They help screen readers understand the purpose and state of interactive elements.

The Three Main ARIA Labeling Attributes

aria-label

Use aria-label to provide a text label directly on an element. Ideal for icon-only buttons and inputs without visible labels.

aria-labelledby

Use aria-labelledby to reference another element's text as the label. Great when labels already exist in the DOM or to combine multiple text sources.

aria-describedby

Use aria-describedby for additional descriptive text like form field instructions and error messages.

Common ARIA Mistakes

Mistake 1: Redundant Labels

Don't add aria-label to elements that already have visible text labels.

Mistake 2: Empty or Unhelpful Labels

Labels like "button" or "click here" don't help users.

Mistake 3: Using ARIA When Native HTML Works

Always prefer native HTML labels over ARIA when possible.

ARIA Label Priority

Screen readers follow this priority order:

  • aria-labelledby (highest priority)
  • aria-label
  • Native HTML labels
  • Element content
  • Best Practices

    Do:

  • Use native HTML elements first
  • Keep labels concise but descriptive
  • Test with actual screen readers
  • Include action verbs for buttons
  • Don't:

  • Add ARIA labels to decorative elements
  • Duplicate visible text in aria-label
  • Use vague labels like "click here"
  • Conclusion

    ARIA labels are powerful tools for improving accessibility, but they should supplement—not replace—semantic HTML.

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