A profile correcting method includes: acquiring a device profile indicating correspondence relationships between a plurality of input values and a plurality of sets of first output values, each first output value set corresponding to one of the plurality of input values, each input value representing an achromatic color having a density level, each first output value set including a plurality of chromatic values each representing a chromatic color, the achromatic color being reproduced by mixing the chromatic color; and, performing a process for each input value.