Color theory

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1. Color Wheel: A Color Wheel is a representation of a series of colors, displayed in an orderly manner on a circular disk. http://i260.photobucket.com/albums/ii7/ruanyf/blog/12partwheel-big.gif It is created by first listing the primary colors: red, yellow, and blue. http://i260.photobucket.com/albums/ii7/ruanyf/blog/3partwheel.gif Then, by mixing these two colors, secondary colors are produced: green, orange, and purple. http://i260.photobucket.com/albums/ii7/ruanyf/blog/6partwheel.gif Next, by continuing with the 2+2 combination, 6 more tertiary colors are generated: yellow-orange, red-orange, red-purple, blue-purple, yellow-green, and blue-purple. http://i260.photobucket.com/albums/ii7/ruanyf/blog/12part.gif New colors are created by continuously mixing adjacent colors, eventually forming a complete Color Wheel. 2. Analogous and complementary colors: Any three adjacent colors on a 12-color color wheel are known as analogous colors. It is generally believed that they look harmonious together. http://i260.photobucket.com/albums/ii7/ruanyf/blog/ctheory_leaf.gif The two colors on the diagonal of a color wheel are known as complementary colors. It is generally believed that when placed together, they create a contrasting effect. http://i260.photobucket.com/albums/ii7/ruanyf/blog/ctheory_orchid.gif Additionally, if one is looking for three colors that are in balance with each other, one can choose any three colors that form a triad on a 12-color color wheel. http://i260.photobucket.com/albums/ii7/ruanyf/blog/8529.gif If you want to find three colors, with two of them being similar to each other and the third contrasting with them, you can choose colors that are adjacent to each other on the complementary color spectrum. (split-complementary colors) http://i260.photobucket.com/albums/ii7/ruanyf/blog/8528.gif 3. Color models There are three commonly used color models, namely RGB, CMYK, and HSV models. 4. RGB model: RGB is an abbreviation for Red, Green, and Blue; any color can be created by mixing these three colors in different proportions. This model is mainly used for color display on electronic screens. The RGB model typically uses three hexadecimal numbers to represent colors; FFFFEE represents a mixture of 100% red, 100% green, and 100% blue, resulting in white ； 000000 represents a mixture of 0% red, 0% green, and 0% blue, resulting in black. http://i260.photobucket.com/albums/ii7/ruanyf/blog/8519.gif 5. HSV model: H stands for Hue, which is a synonym for \"color\". http://i260.photobucket.com/albums/ii7/ruanyf/blog/8530.jpg S stands for Saturation, which refers to the purity of a color, that is, the degree to which gray is present in that color. The higher the saturation, the purer the color ； The lower the saturation, the greater the gray component in the color. Any color turns gray when its saturation reaches the minimum value. http://i260.photobucket.com/albums/ii7/ruanyf/blog/8507.jpg V stands for Value, which refers to the amount of white in a color. The higher this value, the whiter and brighter the color; the lower this value, the darker and blacker the color. At the maximum value, all colors turn white; at the minimum value, all colors turn black. http://i260.photobucket.com/albums/ii7/ruanyf/blog/8508.jpg The HSV model identifies colors by adjusting these three values. It is usually in the form of a color wheel, with the colors on the edges being the most saturated, and the saturation decreasing as one moves toward the center. Hue is selected through an angle value, while there is another brightness axis for selecting the Value. http://i260.photobucket.com/albums/ii7/ruanyf/blog/8518.jpg 6. The CMYK model is primarily used in the printing industry; it involves mixing cyan, magenta, yellow, and black to create various other colors. http://i260.photobucket.com/albums/ii7/ruanyf/blog/8510.gif The patterns on printed materials are, upon close inspection, made up of tiny dots; each of these dots uses four-color printing, and it is through the overlapping of these colors that various shades are created. http://i260.photobucket.com/albums/ii7/ruanyf/blog/8517.jpg http://i260.photobucket.com/albums/ii7/ruanyf/blog/8512.gif http://i260.photobucket.com/albums/ii7/ruanyf/blog/8513.gif http://i260.photobucket.com/albums/ii7/ruanyf/blog/8515.gif http://i260.photobucket.com/albums/ii7/ruanyf/blog/8516.gif http://i260.photobucket.com/albums/ii7/ruanyf/blog/8514.gif