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The perception of the different wavelengths of light. It is possible to create almost all visible colors using two systems of primary colors. Transmitted colors use red, green and blue (RGB), and reflected colors use cyan (light blue), magenta (purplish-red), yellow and black (CMYK). Color displays use RGB (colors are added to create white) and color printing uses CMYK (colors are subtracted to create white).

Color Mixing Methods
The two major ways to create colors are RGB and CMY. RGB uses red, green and blue pixels for the display screen. CMY uses cyan, magenta and yellow inks to print on paper. In theory, equal parts of cyan, magenta and yellow ink make black, but the blacks tend to be muddy. Thus, a pure black fourth ink is always used in the four color CMYK process (K for blacK).

What does it mean when you dream about colors?

Many colors in a dream may depict energy, as colors are vibrations of light. A single color seen in a dream can be interpreted only in the context of the dreamers relationship with that color. For example, the color red may be experienced as love, romance, and sex. For someone else, or in another dream, the color red may denote blood, death, and destruction. Black may mean evil, witches, and black cats, or sophistication and elegance.

References in periodicals archive ?
When painting a room with several colors, choose the same values to keep the eye from jumping from one wall to the other.
scientist's fascination with the mental "interference" that occurs when someone tries to think about two dimensions of a task at the same time led him to combine colors and words, MacLeod maintains.
Bayplast organic pigments, available in several basic colors, offer high color strength and brilliance, superior heat stability, lightfastness and weather resistance.
And if the color looks a little off - if adjacent components don't match perfectly, for instance - no purchase is likely to be made.
In the pressroom, PerfectPalette will allow companies with 6 and 7 color presses to produce work that simulates spot colors that would otherwise require additional units or multiple press runs.
The current 4 million colors are designed for PE and PP.
When a color image is copied, printed or faxed on a black-and-white device, the colors are converted to shades of gray.
Special-effects colors include metallics, pearlescents, phosphorescents and thermochromics.
The technology produces bolder blacks and uniform, vivid colors that dry three times faster(3) than traditional papers, enabling more immediate handling and reducing the risk of smearing.
Specular pigmented FDA-compliant colors in black, blue, green, red and yellow.
The colors are not going to be muddied and soft; they're going to be quite dramatic,'' says Debbie Zimmer, decorative painting consultant for the Rohm and Haas Paint Quality Institute.