PSD Color Wheel
Photoshop CS3 Tutorial
How to Work with the PSD Color Wheel
The Photoshop color wheel is somewhat different than a conventional painter color wheel. Color theory tells us that there are three primary colors (red, blue and yellow) and three secondary colors (orange, violet and green).
The computer color wheel is comprised of red, green, blue and yellow, cyan, magenta.
Open the color picker by clicking the Foreground Color swatch.
Click multiple times in the picker swatch and notice that each color is described in five different ways (HSB, RGB, Lab, CMYK and Hex (web)).
Choose 100 percent red, R = 255, G = 0, B = 0).
Notice that the Hue, Saturation, Brightness value (HSB) is H = 0, S = 100, B = 100.
The color wheel has 360 degrees. The computer color wheel complement of red is 180 degrees shift in the hue (H = 180, S = 100, B = 100. This gives you Cyan.
Computer Color Wheel Complements are Red and Cyan, Blue and Yellow, Green and Magenta.
Web colors are defined with six characters. The first two assign a red value, the second two control the green and values five and six specify the blue component.