A color adjustment apparatus comprises an input unit for receiving an input operation, a color adjustment display segment for displaying orthogonal coordinate systems between a pre color adjustment hue axis and an adjustment target axis indicative of a degree of adjustment of a hue, saturation, or lightness and an adjustment line indicative of a relationship between before color adjustment and after color adjustment on the orthogonal coordinate systems, an adjustment line changing unit for changing the adjustment line in response to an operation by the input unit, and a color adjustment unit for adjusting a hue, saturation, and lightness of a target image in correspondence with the adjustment line changed by the adjustment line changing unit.