A color reproduction meth a color printing apparatus which reproduces a color by a combination of a black plate and a plurality of chromatic color materials, which calculates color control values including a quantity of addition of the black plate to a first color reproduced by only a combination of the chromatic color materials to reproduce a second color which is reproduced by adding the black plate to the first color, includes: calculating, based on a color profile of the color printing apparatus, a characteristic data representing characteristic changes of a brightness and a color saturation of a representative color caused by adding the black plate to the representative color, wherein the representative color is reproduced by only any one of the chromatic color materials or a combination of the chromatic color materials; and calculating the color control value based on the characteristic data.