Why RGB 3 colors can make colorfull world?
By far the most widely used color mode in the world of computers and technology is the "RGB" color mode. led screen uses it, other programs on your computer use it, your computer monitor uses it, so does your digital camera and scanner, your television, even the little screen on your cellphone or iPod uses it, as well as those handheld game systems like the Sony PSP or the Nintendo DS. If it's a device that either displays or captures images, or a software program that edits those images, it uses the "RGB" color mode. Sounds pretty important, doesn't it? And it certainly is. Yet for all it's widespread use and technological importance, all "RGB" stands for is the names of three colors - Red, Green and Blue.
So what's so special about these three colors, red, green and blue? Well, they just happen to be the primary colors of light. And what does that mean? It means that every color you and I can see is made up of some combination of red, green and blue. How do we get yellow? By mixing red and green. How do we get magenta? By mixing red and blue. What about orange? 100% red, 50% green. And these are just basic examples. Every single color that we can see is made up of some combination of these three colors. Sounds almost impossible, I know, but it's true.
When you mix fully saturated versions of all three colors together, you get pure white. When you remove all three colors completely, you get pure black. And when you mix equal amounts of all three colors at some percentage between 0 and 100%, you get a shade of gray.
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