Accessibility drives innovation. By designing for the edge cases — users with low vision, motor impairments, or cognitive differences — teams produce interfaces that are clearer, faster, and more intuitive for everyone. Yet it remains one of the most commonly deferred line items in a product roadmap.
The Business Case
Beyond compliance and ethics, accessibility is a competitive advantage. An estimated 1.3 billion people worldwide live with some form of disability. Inaccessible products exclude a market segment larger than the population of China. WCAG 2.2 AA conformance is also a legal requirement in many jurisdictions under the ADA, EN 301 549, and the European Accessibility Act.
Core Principles: POUR
- Perceivable: All information must be presentable to users in ways they can perceive (captions, alt text, sufficient contrast).
- Operable: All functionality must be available via keyboard, without time limits that users cannot extend.
- Understandable: Text must be readable; behaviour must be predictable.
- Robust: Content must be interpreted reliably by assistive technologies including screen readers.
Practical Implementation Steps
Shifting accessibility left means integrating it at the design stage, not the QA stage.
- Use colour contrast checkers (minimum 4.5:1 for body text).
- Build with semantic HTML — a
<button>is always better than a<div onclick>. - Ensure every interactive element has a visible focus state.
- Write descriptive alt text for all meaningful images.
- Test with screen readers (NVDA, VoiceOver) and keyboard-only navigation.
Automating the Baseline
Tools like Axe, Lighthouse, and Arc can catch approximately 30–40% of accessibility issues automatically. Build these into your CI pipeline as a gate. The remaining issues require manual testing and user research with disabled participants — the most valuable feedback loop of all.
KEY INSIGHT "Accessibility is not charity. It is good engineering."