Color processing apparatus and method

A color processing apparatus includes an input range obtaining unit configured to obtain an input range of input color data (17a) represented by a first color space that is an extended color space, a setting unit configured to set grid point coordinate values for each of a plurality of color components included in the input color data (17a), and a generating unit configured to generate a look-up table (16) by performing conversion processing on each look up table coordinate value corresponding to grid point coordinate values set for the plurality of color components, and storing a result of the conversion processing in the look-up table (16). The setting unit sets the grid point coordinate values such that each of the primary colors in a second color space that is a base color space is located at a grid point and the plurality of color components have identical grid point coordinate values among the primary colors.