1. A color transformation method of transforming a color component set representing color space to another color component set representing different color space, the method comprising: a) reading a first color component set from a predetermined memory; b) transforming the read first color component set to a second color component set using a predetermined transformation function; and c) storing in tangible memory the second color component set to correspond to the first color component set, wherein the predetermined transformation function is defined by: determining a first transformation matrix for acquiring dominant components of the first color component set; and multiplying each element of the determined first transformation matrix by a predetermined integer k, thereby transforming a color component set representing color space to another color component set representing color space.