Concepts & Principles

Learn more about the concepts and principles that inform accessibility standards and best practices.

Alt Text
Use meaningful text to accurately describe images for people using screen readers
Captions for Video
Include text equivalent of spoken dialog and meaningful sounds in videos
Color
Use color thoughtfully to ensure clarity and accessibility for all users
Color Contrast
Check and improve contrast between text and background for readability
Headings
Structure content with headings to improve readability and navigation
Lists
Format lists using numbered or bulleted lists to make them easy to understand for all users
Links
Use clear and descriptive link text so users know exactly where links will take them
Tables
Create accessible tables with clear headers and structure

The following concepts apply to web design and development.

Page Regions
Organize web pages using regions and landmarks to improve navigation
Valid Markup
Ensure web pages are designed using accepted code and standards

POUR Principles
Use the four main guidelines for web accessibility as defined by the Web Content Accessibility Guidelines (WCAG)