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Color requires three things to exist; light, an object to absorb or reflect the light and eyes to perceive the color. Color is a property of light. Color carries more associative and emotive characteristics than black and white our and we will work with that expressive quality in this exercise as well as the structural relationships of color. We will explore both the spectrum relationship of blue to red which excites our optic nerve, exhibits sharp contrast and generates after images and the association of blue and sky or water as well as the perception that blue may be seen as calm or peaceful. Colors are organized in a variety of ways; RGB (red, green, blue) additive primaries and CMYK (cyan, magenta, yellow and black) subtractive primaries are two widely used structures. We will base out study on the color wheel. It is simple and easily understood. When light is passed through a prism it creates a spectrum the ranges from ultra violet to infra red. The order of the spectrum is
- Red
- Orange
- Yellow
- Green
- Blue
- Violet
When this sequence is wrapped into a circle we have a color wheel. Colors that are adjacent, next to, each other are analogous colors, colors which are opposite each other are complementary colors, and colors at thirds on the color wheel are a triad. There are many terms use in the discussion of color but the essence is fairly simple.
Hue- is the essence of the color, that which distinguishes red from green
Value- is the amount of black or white mixed into the color
Intensity-is the intensity of color, how pure and dense the pigment is or how transparent, this is also called chroma or saturation
Monochromatic-describes colors with a common hue but different values and intensities.
These two sites have additional information on color theory;
http://www.colormatters.com/colortheory.html
http://www.cs.brown.edu/courses/cs092/VA10/HTML/start.html
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