Use of Color
Color should not be the only means of conveying information, as it may not be distinguishable by all users, including those with color blindness.
Problems
- All users, and those with memory problems in particlar, have trouble remembering what text color signifies if it is not used consistently.
- Users with color blindness often have trouble distinguishing between red and green.
WCAG Success Criteria
WCAG Sufficient Techniques
- G182: Ensuring that additional visual cues are available when text color differences are used to convey information
- C15: Using CSS to change the presentation of a user interface component when it receives focus
Testing Method
- Without using the mouse or keyboard, can you tell what is ordinary text and what is a link?
Colorblind-safe Palettes
#004576
#3FC76E
#88CCEE
Example
Practice Exercise
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