Cie-L*ab is defined by lightness and the color-opponent dimensions a and b, which are based on the compressed Xyz color space coordinates. Lab is particularly notable for it's use in delta-e calculations. Read more about it here.
Cmy is frequenty associated with color printing, and it's determined by the relation of colors cyan, magenta and yellow. Unlike Rgb, cmy is subtractive, meaning that higher values are associated with darker colors rather than light.
Color conversions performed using the open source ColorMine library.
Cool! Creating famous images from color palettes found in other images: http://t.co/H1OxefkOt0