CMYK(4)
The CMYK color model shows 4 different types of inks used in color printing which can make more colors by mixing each of the three colors. CMYK refers to the four inks used in color printing: cycan, magenta, yellow, and key . I have also seen these types of colors in a printing machine. The little cartridge always shown these 4 colors.
C- Cycan
M- Mageneta
Y- Yellow
K- Key (Black)
RGB(3)
The RGB color model is a color model in which red, green, and blue light is added together in various ways to reproduce more different colors. Green and blue make a bright sky blue ink color. Green and red make a bright yellow ink color. And, red and blue make a pink/almost fushia color.
R- Red
G- Green
B- Blue
RGB color model is used to represent and display of images in electronic systems, like televisions and computers, but it can be useful in camera photography.
Well i did go a little far down the list for CMYK but for RGB that was really simple. To me, i think it is neccessary to use both CMYK & RGB because they have all the colors we need and my mixing in the color we can get new different colors. (:
