Aspects of the present disclosure relate to color printing calibration. In a particular example, an apparatus includes an output circuit to print a color target for a particular lot of printing material, a calibration circuit, and an identifier circuit. The calibration circuit may identify color values for the color target, determine a plurality of color correction values for the particular lot of printing material based on the identified color values, and generate a color corrections map including the determined color correction values for the particular lot of printing material. The identifier circuit may generate an identifier corresponding with the color corrections map, identifying a location of the color corrections map in a network-accessible table for retrieval and calibration of printing devices using the particular lot of printing material.