combination of light (beam) colors is different from combination of pigment (ink, watercolor, paint,etc.) colors..
for example...
if you combine all the light colors, you'll produce a white light..
but if you combine all the pigment colors you'll come up with a dark color closer to black.I'm curious to why A color TV uses certain colors and a printer uses others?
I'm no science expert, but it has something to do with the colors of ink/paint vs the colors spectrum of light.
In light, black is the absence of color, and white is all colors together. In paint, black is all colors mixed together.
Maybe a techno-geek will explain it better than that!
The RGB selection is used for devices that create light such as TVs, and is called an ';additive'; color system.
The CMYK selection (K=Black) is used for devices where light is subtracted such as inks on a printed page, and is called a ';subtractive'; color system.
When you see color on the page, the white room light bounces off of the ink, and the ink subtracts certain colors from the full white spectrum.
They differ because they are using different techniques to produce color. TV's use RGB methodology, which is an additive methodology, like what we were taught in elementary school. Most printers, on the other hand, use the CMYK methodology, which is actually a subtractive model. This means you use one color to block out another color.
Part of the reason for the different methodologies, I believe, lies in the fact that TV's use a black screen while most paper is bright white. Since black, in light, is the absence of color, TV's need to add color to it to create the colors you see. Since white is all colors, printers need to subtract colors from it to create the colors you see.
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