The present invention relates to processes of color data, and an object of the present invention is to provide a color converter and color converting method, with a color converting process for enhancing the saturation for color data, capable of preventing the influences of noise components from being emphasized and also preventing damaged color from occurring.In order to achieve the object, multiplication coefficient calculation means calculates a multiplication coefficient based on characteristic information of first color data which is a target of color conversion, and second color correction amount calculation means calculates a second color correction amount by multiplying a first color correction amount by the multiplication coefficient obtained from first color correction amount calculation means. Then, in color correction amount addition means, the second color correction amount is added to the first color data, so that second color data after the color conversion is obtained. Since the second color correction amount is calculated on the basis of the first characteristic information, it is possible to prevent the influences of noise components from being emphasized, and also to prevent damaged color from occurring.