Color wheel
Formal– A color wheel (also referred to as a color circle) is a visual representation of colors arranged according to their chromatic relationship. Begin a color wheel by positioning primary hues equidistant from one another, then create a bridge between primaries using secondary and tertiary colors.
Source– http://www.worqx.com/color/color_wheel.ht
Informal– a circle with different colored sectors used to show the relationship between colors.
Primary triad
Formal– Is so called because, theoretically, all other colors can be mixed from it. It is composed of red, yellow, and blue, which are equidistant from each other on the color wheel.
Source– http://www.flashcardmachine.com/art-vocab1.htm
Informal– when three primary colors are used
Secondary triad
Formal–In subtractive color, orange, green, and violet. They are called secondary because each can be made by combining two primaries.
Source– http://www.flashcardmachine.com/art-vocab1.ht
Informal– when secondary colors are used
Tertiary hues
Formal– Are the combination of a primary color with a secondary color.
Source– http://www.flashcardmachine.com/art-vocab1.ht
Informal- primary and secondary color mixture
CMYK
Formal– The CMYK color model (process color, four color) is a subtractive color model, used in color printing, and is also used to describe the printing process itself. CMYK refers to the four inks used in some color printing: cyan, magenta, yellow and key (black).
Source– https://www.google.com/?client=safari&channel=iphone_bm#channel=iphone_bm&q=cmyk+definition
Informal– when three colors are combined and 4th one is produced. Cyan, Magenta, Yellow and black (key)
RGB
Formal– RGB (red, green, and blue) refers to a system for representing the colors to be used on a computer display. Red, green, and blue can be combined in various proportions to obtain any color in the visible spectrum.
Source– https://www.google.com/?client=safari&channel=iphone_bm#channel=iphone_bm&q=rgb+definition
Informal– representing red green and blue
