bb is the color's blue component ... as '00FFFF00', green as 'FF00FF00', process black (uses cyan, magenta, and yellow ink) as 'FFFFFF00', and pure black (uses only black ink) as '000000FF'. For CMYK ...

For official and/or permanent applications, use only the primary and secondary colors (Brandeis Blue and Cyan). Accent colors can be used in addition to the primary color for multi-faceted projects or ...

The major difference is that in a RGB color space, all the colors information are resulted from the mixing of red, green, and blue; but in a CMYK color space, all the colors are results of the mixing ...