Use More than Color Alone to Convey Information in a Web Page

We should not use color alone as the only visual means of conveying information, indicating an action, prompting a response, or distinguishing a visual element. Users may not be able to see/understand the differences in color and require additional indicators.

Along with color, use additional indicators such as:

• typography
• shapes
• grids
• spaces
• and/or allocate more weight to important elements

References:

• http://www.particletree.com/features/interfaces-and-color-blindness/
• https://www.smashingmagazine.com/2014/10/color-contrast-tips-and-tools-for-accessibility/