Line, motion, space, texture, size , form, shape, typography, and color.
As a member of the 9 structural units, or elements of visual interaction design, the role of color is integral to the way we communicate, parse, and enhance information on and off the screen. In an attempt to simplify human interaction with the digital interface, designers have pursued the style of a “flat UI”. This bare-bones approach relying mostly on rectangular shapes and solid, flat color is meant to place a user’s focus on content. The visual shift from skeuomorphism to flatland also helped to foreshadow a product’s ease-of-use by dramatically simplifying how the interface looked.
Designing for color blindness (aka Daltonism) is an example of how designers can practice visual empathy and learn to experience the world from someone else’s perspective.