CMYK stands for Cyan, Magenta, Yellow, and Black, respectively.
Some people have stated that K is used because it is the last letter of "black." However, that is not correct. Black is symbolized by K, which stands for "key" because in the printing industry the black plate was used as a reference to key, or align, the other color plates.
--DrMattB
CMYK stands for- C= Cyan, M=Magenta, Y=Yellow, K=Black
The K in CMYK can can stand for either blacK or Key colour.The "K" in CMYK stands for key since in four-color printing cyan, magenta, and yellow printing plates are carefully keyed or aligned with the key of the black.Suggesting that the "K" in CMYK comes from the last letter in "black" and was chosen because B already means is incorrect.Courtesy of Wikipedia;http://en.wikipedia.org/wiki/CMYK_color_model
K is used to represent Black in CMYK because B is already used for Blue in RGB.
Magenta
C = Cyan M = Magenta Y = Yellow K = Key
I presume you mean in the CMYK colour model. There are two reasons, partly to avoid confusion with the B for blue, but mainly the K doesn't stand for "black", it stands for "key" - in printing the cyan, magenta and yellow had to be aligned (or keyed) with the black.
cmyk color c=100 m=72 y=0 k=30
cmyk color c=100 m=72 y=0 k=30
C-37 m-36 y-61 k-4
It's Pantone 363U and its variants on CMYK or JPEG.
Cyan : 7 M : 82 Y : 100 K : 1
what does K stand for in K( , K 12 and K 14 pipes and fittings