Adobe 29180155 User Guide - Page 149
RGB model, Color wheel
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B 0 360 100 100 ADOBE PHOTOSHOP ELEMENTS 4.0 144 User Guide A C 0 0 HSB view in the Adobe Color Picker A. Saturation B. Hue C. Brightness RGB model A large percentage of the visible spectrum can be represented by mixing red, green, and blue (RGB) light in various proportions and intensities. These three colors are called the additive primaries. Added together, red, green, and blue light make white light. Where two colors overlap, they create cyan, magenta, or yellow. The additive primary colors are used for lighting, video, and monitors. Your monitor, for example, creates color by emitting light through red, green, and blue phosphors. A B C D E F Additive colors (RGB). A. Red B. Green C. Blue D. Yellow E. Magenta F. Cyan Color wheel The color wheel is a convenient way to understand and remember the relationship between colors. Red, green, and blue are the additive primaries. Cyan, magenta, and yellow are the subtractive primaries. Directly across from each additive primary is its complement: Red-Cyan, Green-Magenta, and Blue-Yellow. Each subtractive primary is made up of two additive primaries, but not its complement. So, if you increase the amount of a primary color in your image, you reduce the amount of its complement. For example, yellow is composed of green and red light, but there is no blue light in yellow. When adjusting yellow in Photoshop Elements, you change the color values in the blue color channel. By adding blue to your image, you subtract yellow from it.