In a system in which color matching is performed upon downloading a profile from a profile management server (100), the profile of a target printer may not be available under the management of the profile management server. In such case the profile management server decides a similar profile based upon information relating to the target printer. This information is composed of colorimetric values obtained on a print sample from the target computer and image data values of the print sample. The profile management server evaluates color differences with respect to color values of profiles under its management and selects a profile for which the color difference is smallest as the similar profile.