A print data generating apparatus executes color conversion on image data using a color conversion profile to generate print data. In the color conversion profile, each of a plurality of sets of specific color data defined in a specific color space are associated with a set of first ink color data defined in an ink color space. A part of the plurality of sets of specific color data are further associated with a set of second ink color data defined in the ink color space. In bi-directional printing, a print executing unit uses the first ink color data to execute one of forward print and backward print, and uses both the first ink color data and the second ink color data to execute another of forward print and backward print.