A method and a system for predicting print colors are provided. A profile generator determines standard density spectral reflectances of a color chart printed under standard density conditions, first changed density spectral reflectances of a color chart printed with only the density of one of colors C, M, Y, K being changed by a given amount, and second changed density spectral reflectances of a color chart printed with the densities of the colors C, M, Y, K being changed by the same amount. The profile generator generates a print predicting profile for obtaining desired target densities, using the standard density spectral reflectances, the differences between the standard density spectral reflectances and the first changed density spectral reflectances, and corrective coefficients for obtaining the second changed density spectral reflectances, and predicts highly accurately colors of the print where the density of a desired color is changed, using the print predicting profile.