Abbreviations used in aviation forecasts and warnings. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z.
Rich Black. ich Black is used to refer to a mixture containing the four process colors: cyan, magenta, yellow, and black (CMYK) colors. This is necessary because no black ink is truly black, and the combination of the four inks will result in a denser black, or ârich black.â The printing industry has many definitions of rich black.
CMYK to RGB conversion formula. The R,G,B values are given in the range of 0..255. The red (R) color is calculated from the cyan (C) and black (K) colors: R = 255 Ã (1- C) Ã (1- K). The green color (G) is calculated from the magenta (M) and black (K) colors: G = 255 Ã (1- M) Ã (1- K). The blue color (B) is calculated from the yellow (Y) and black (K) colors: B = 255 Ã (1- Y) Ã (1- K).