Accessibility isn't a feature or checkbox—it's a fundamental approach to designing interfaces that work for all users, regardless of abilities or circumstances.
Core accessibility principles (POUR):
- Perceivable: Information must be presentable in ways all users can perceive
- Operable: Interface components must be navigable by all users
- Understandable: Information and operation must be clear and consistent
- Robust: Content must be compatible with various assistive technologies
Key accessibility considerations:
- Visual: Color contrast, text size, screen reader compatibility
- Motor: Target sizes, keyboard navigation, reduced motion
- Cognitive: Clear language, consistent patterns, error prevention
- Hearing: Captions, transcripts, visual alternatives for audio cues
- Situational: Temporary limitations like bright sunlight or one-handed use
Implementation strategies:
- Start with semantic HTML (before CSS and JavaScript)
- Design for keyboard navigation first
- Create accessible color palettes from the beginning
- Test with assistive technologies regularly
- Include people with disabilities in user research
- Automate testing where possible, but don't rely on it exclusively
Business case for accessibility:
- Reaches 15-20% of the population with disabilities
- Improves usability for all users
- Reduces legal risks (ADA, Section 508, EAA)
- Enhances SEO and device compatibility
- Demonstrates social responsibility
Accessibility isn't about designing "special" experiences—it's about ensuring your main experience works for everyone. The most effective approach is to build accessibility in from the start, not add it later.