Design Guide: Accessibility
Your add-on should consider customers with disabilities across Alexa's assistive technology stack as you build.
Input parity
You should be able to complete your experience end-to-end through any single input:
- Voice only, without touching the screen
- Touch only, including on-screen keyboard, without voice
Assistive technology interoperability
Your add-on must function without regressions when these assistive technologies are enabled:
- VoiceView / screen readers. All on-screen content must be navigable via touch while VoiceView reads items aloud. Information read by VoiceView must match the quality of information shown on screen.
- Screen Magnifier. Pinch-to-zoom must work without breaking layout or hiding content.
- Color Correction and Color Inversion. Your experience must remain usable with these settings applied.
Touch targets
- Minimum 48×48px touch target on multimodal devices.
- All buttons and UI controls must be labeled correctly for screen readers.
Contrast
- Text 17px and under: 4.5:1 minimum contrast ratio.
- Bold text and 18px or larger: 3:1 minimum contrast ratio.
- Visuals: Color and text within graphical elements must meet 4.5:1 contrast.
Motion safety
- Avoid screens or animations that flicker, flash, or blink.
- If you must draw attention with motion, keep flash frequency at no more than 3 flashes per second to address photosensitivity.
Alt text
- All images and meaningful graphical elements (icons, symbols) must have descriptive alt text.
- Write a short, informative phrase — 125 character limit.
Accessibility features must be tested on device. See also Testing your add-on CX.
Related topics
| Go back to: Brand Expression | Next: Evaluate Your UX |
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Last updated: Jul 21, 2026
