Marcelo Paiva
A hooded person in profile looks upward beside a traffic light, with rain, cars, and streetlamps behind.

Success criterion 1.4.1 · Level A

Use of Color

“Red means go, green means stop! Wait, that's not right, is it?”

Who this helps: Color Blindness

Success criterion 1.4.1 · Level A

Use of Color

Color is not used as the only visual means of conveying information, indicating an action, prompting a response, or distinguishing a visual element.

Principle 1: Perceivable · Guideline 1.4: Distinguishable

What each role can do

Product manager
Make sure color alone is not the only indicator for important actions or information.
Designer
Combine color with other visual indicators like text, shapes, or icons.
Developer
Implement visual cues alongside color to convey information effectively.
Tester
Test the design for accessibility with color blindness simulators.

Once it is fixed

“Finally, I don't have to play a guessing game with colors. You've made life a whole lot easier!”

Next criterion: 1.4.2 Audio Control