COLOR CONVERSION APPARATUS, SIGNAL STANDARD CONVERSION APPARATUS, COLOR CONVERSION METHOD AND STORAGE MEDIUM

An object of the present invention is to suppress an arithmetic operation amount while preventing tone data missing with a desired accuracy in a case where gamma conversion whose nonlinearity is strong and color conversion are performed. The present invention is a color conversion apparatus including: a floating-point conversion unit configured to convert each piece of color data of a plurality of color components into common exponent part data and mantissa part data of each of the plurality of color components; a color conversion processing unit configured to perform color conversion for the mantissa part data of each of the plurality of color components and to output color conversion processing data; and a derivation unit configured to derive fixed-point data of each of the plurality of color components based on the color conversion processing data of each of the plurality of color components and the common exponent part data.