1. A color processing method of mapping one or more input colors in a first color gamut into a second color gamut, the method comprising: setting one or more reference colors existing in the first color gamut and serving as a reference for mapping; setting a distribution range for one or more mapped points based on color values of the set one or more reference colors; distributing mapped points corresponding to the one or more input colors into the distribution range; and mapping the one or more input colors into the second color gamut using the mapped points.