Color Theory 101

The Color Theory talks about the formation of colors and how they are categorized.

"The colors displayed on computer screens (i.e. the colors we’ll be using in our web site designs) are based on an additive color model. In an additive color model, colors are displayed in percentages of red, green, and blue (RGB) light."

Turning all three of these colors on at the same time produces white.
"The color wheel is a simple but effective diagram developed to present the concepts and terminology of color theory. The traditional artists’ color wheel is a circle divided into 12 slices"

Primary Colors
The primary colors of the traditional color wheel are red, yellow, and blue. These hues form an equilateral triangle on the color wheel, and every fourth color from one primary color is another primary.

Secondary Colors
By mixing two neighboring primary colors, we create secondary colors, which are indicated here by the smaller gray triangles. The secondary colors are orange, green, and purple.

Tertiary Colors
There’s a total of six tertiary colors: vermilion (red-orange), marigold (yellow-orange), chartreuse (yellow-green), aquamarine (blue-green), violet (blue-purple), and magenta (red-purple). As you might already have guessed, the tertiary colors are formed by mixing a primary color with an adjacent secondary color.