The color models that are the most familiar and frequently used can be divided into two subgroups: RBG and CMYK. The use of these color models are seen from motion picture displays, video games, to the pictures printed on a banner.The broad spectrum of all of these colors are derived quite simply; only three of them are used to initiate the whole process. Though frequently used there remains certain color constraints among this system.
The colors are Red, blue and green; otherwise known as RBG. RBG is based on the projection of color, and resembles how color is perceived by the human eye. Derived directly from the light spectrum, RBG are the colors that are used in television screens and on computer monitors. These are also known as additive colors, because mixing these particular colors together create other colors within the spectrum.
In an opposite process we have subtractive colors. These colors are created when certain amounts of white light are reflected while the rest of that light is absorbed. From this process we get the colors Cyan, Magenta, and Yellow.
Though most colors can be expressed through RGB and CMYK, there are some color gamut constraints among these models. What are gamuts? The gamut is a certain complete subset of colors. Gamut involves the maximum range of colors that can be accurately presented in a given circumstance. The gamut of the human eye is quite vast, as it can perceive about 10 million colors. In that way the RBG and CMYK models are limited when compared to the actual range of colors that we are able to see.
Furthermore, they differ to such an extent that there are many RGB colors that cannot be produced using CMY(K), and similarly, there are some CMY(K) colors that cannot be produced using RGB. The exact RGB or CMY(K) gamut depends on other factors as well. Every RGB device, whether a display monitor, color printer, color scanner, etc., has its own unique gamut. These factors affect the gamut of CMY(K) production. To help combat this the print industry has set standards for color production variances in presses, inks, and paper, as well as differences in environmental conditions. These differences in gamut can create problems in the color production of computer-generated graphics. A printed item with inconsistent color is a problem inherent in all computer-generated color output.