Data Visualization Toolkit: Interactive Displays Accessibility Tips

Interactive Displays Accessibility Tips

Accessibility considerations for interactive displays focus on creating graphics and functionality that can be accessed multiple ways by a wide variety of users. Web Content Accessibility Guidelines (WCAG) 2.1 developed by the Web Accessibility Initiative include the following considerations when putting data into interactive displays:

  • Avoid using color as the only way of conveying or distinguishing information, and give the user control to set foreground and background colors.
  • Provide a way to resize text up to 200% without loss of content or functionality.
  • Ensure all functionality is available from a keyboard.
  • Use headings and labels to describe the content and its purpose.
  • Provide a way to identify the meaning of all acronyms and other less common words and phrases.
  • Provide text alternatives (alt text) for all non-text graphics so that it can be changed into other forms such as braille or large print, and used by assistive technology such as screen readers.
  • Use labels, instructions and error messages so that users can avoid and fix mistakes.