As a small business owner, a print buyer, or a designer, it is important to know when to use RGB and CMYK. By knowing this essential information, it can help you to save money when printing. The prepress department will not have to do as much work to do, correcting your design mistakes.
If you know nothing about RGB or CYMK colors…Then you should probably know this:
K Also known as black.
It is important as a designer to know when to use RGB and CMYK. It is essential to know that anything dealing with web or screens (computers, phones, TV, etc.) should always be RGB and printed material should be in CMYK.
Why is this you may ask?
RGB is addictive, protected light color system. This can be confusing, I know - But imagine starting with a black surface and then adding colors of light to it (Red, green, and blue). Have you ever noticed that when you print something in RGB, it looks darker than it is seen on a screen? This is because your digital screens mix together red, green, and blue light to produce the bright colors that you see on websites, your phones, TVs, ect. Without that light that is being emitted by screens, RGB colors look darker.
In other words…Red, green, and blue are the “primary” colors of white light. All three colors will result in white; the absence of all three will produce black.
CMYK (reflected light color system) is subtractive, which means it absorbs light. Now imagine starting with a white surface like a white piece of paper. Now add different colored inks to it. You will notice, that by adding 100% of all 3 colors (CMY), it creates black (K). Printing has to do with absorption and reflection of wavelengths, that we perceive as color.
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