Colors in design can be essential to the image and mood:
Warm colors convey excitement and energy.
Cool colors are calming and relaxing.
Neutral colors are unifying and help us to focus.
Primary, secondary and tertiary colors:
Primary colors are blue, red and yellow.
Secondary colors are orange, green and purple.
Tertiary colors are orange-red, orange-yellow, yellow-green, blue-green, blue-purple, and red-purple.