A color conversion device comprising: an input section which inputs image data of a predetermined number of rows, the predetermined number being two or more; a plurality of color conversion sections (223, 223a, 223b, 223c, 223d) which perform color conversion in parallel to convert colors of pixels contained in the image data of the predetermined number of rows; an obtaining section which obtains attribute information set in each of the pixels constituting the image data of the predetermined number of rows, the attribute information indicating an attribute of each of the pixels; and a reconversion section which determines, on the basis of the attribute information, whether to perform reconversion to reconvert a pixel contained in the image data of the predetermined number of rows color-converted by the color conversion sections, and performs the reconversion, wherein the attribute information includes natural image information which indicates a pixel constituting a natural image, each of the color conversion sections performs the color conversion using color conversion information including information on a correspondence between colors of pixels before color conversion and colors of the pixels after the color conversion, and of the color conversion sections, at least one color conversion section performs the color conversion using certain color conversion information, and the other color conversion section (223b, 223c, 223d) performs the color conversion using other color conversion information having an information amount less than an information amount of the certain color conversion information, characterised in that when the attribute information is predetermined attribute information, the reconversion section converts, using a pixel color-converted with the certain color conversion information in a predetermined pixel area contained in the image data of the predetermined number of rows, another pixel color-converted with the other color conversion information in the predetermined pixel area, so that the value of the pixel color-converted with the certain color conversion information is applied to the other pixel color-converted with the other color conversion information. an input section which inputs image data of a predetermined number of rows, the predetermined number being two or more; a plurality of color conversion sections (223, 223a, 223b, 223c, 223d) which perform color conversion in parallel to convert colors of pixels contained in the image data of the predetermined number of rows; an obtaining section which obtains attribute information set in each of the pixels constituting the image data of the predetermined number of rows, the attribute information indicating an attribute of each of the pixels; and a reconversion section which determines, on the basis of the attribute information, whether to perform reconversion to reconvert a pixel contained in the image data of the predetermined number of rows color-converted by the color conversion sections, and performs the reconversion, wherein the attribute information includes natural image information which indicates a pixel constituting a natural image, each of the color conversion sections performs the color conversion using color conversion information including information on a correspondence between colors of pixels before color conversion and colors of the pixels after the color conversion, and of the color conversion sections, at least one color conversion section performs the color conversion using certain color conversion information, and the other color conversion section (223b, 223c, 223d) performs the color conversion using other color conversion information having an information amount less than an information amount of the certain color conversion information, characterised in that when the attribute information is predetermined attribute information, the reconversion section converts, using a pixel color-converted with the certain color conversion information in a predetermined pixel area contained in the image data of the predetermined number of rows, another pixel color-converted with the other color conversion information in the predetermined pixel area, so that the value of the pixel color-converted with the certain color conversion information is applied to the other pixel color-converted with the other color conversion information.