Accessibility refers to the design of products, services, technologies, and environments that can be used by everyone—including people with disabilities. Its goal is to remove barriers and ensure equal access to information, tools, and experiences.
Disabilities may be permanent, temporary, or situational and include:
Visual: blindness, low vision, color blindness
Auditory: deafness, hearing loss
Motor: limited mobility or dexterity
Cognitive/Neurological: dyslexia, ADHD, autism
Accessibility benefits a wide range of people—not just those with disabilities. For example, captions help users in noisy places; keyboard navigation aids power users; and clear layouts improve readability for all.
Key Principles (POUR)
Accessibility is guided by the four WCAG principles:
Perceivable: Information must be presented in ways users can perceive (e.g., alt text, captions).
Operable: Interfaces must be navigable and functional (e.g., keyboard access).
Understandable: Content should be clear and predictable.
Robust: Content must be compatible with assistive technologies.
Assistive Technologies
People with disabilities often use tools like:
Screen readers
Screen magnifiers
Speech recognition software
Braille displays
Adaptive input devices
Designing with accessibility in mind ensures compatibility with these tools.
Why Accessibility Matters
Ethical: Promotes inclusion and equality
Legal: Required by laws like the ADA, Section 508, and WCAG
Business: Expands reach and improves usability
Accessibility is not just a technical requirement—it’s a commitment to diversity, usability, and social good. It ensures that everyone, regardless of ability, can participate fully in our digital and physical world.