A method for compensating for effects of illumination when comparing soft proofs to hard copy proofs viewed under non-standard illumination comprises obtaining (110), for a set of print colors, device-independent color data corresponding to the standard illumination and obtaining (120) the corresponding data for the non-standard illumination. The method further comprises estimating (130) first device independent color data to be measured on a display for each color when rendering the set of print colors to the display using the device-independent color data corresponding to the standard illumination and a display profile constructed from color data corresponding to the display, estimating (140) second device independent color data to be measured on the display if the display profile is adjusted, calculating (150) differences between the second device-independent color data and the device-independent color data for the print colors corresponding to the standard illumination and adjusting (160) the display profile to reduce differences.