A color conversion device includes color conversion sections, an obtaining section and a reconversion section. The color conversion sections perform color conversion in parallel to convert colors of pixels contained in image data of a predetermined number of rows. The predetermined number is two or more. For the color conversion, at least one color conversion section uses certain color conversion information, and the other color conversion section uses other color conversion information having an information amount less than that of the certain color conversion information. The obtaining section obtains attribute information indicating an attribute of each of the pixels. When the attribute information is predetermined attribute information, the reconversion section converts a pixel color-converted with the other color conversion information using a pixel color-converted with the certain color conversion information in a predetermined pixel area contained in the image data.