A color gamut compression algorithm has been developed based on analysis of observer judgements in a previous interactive gamut mapping experiment. The new algorithm preserves the color relationships between the original and reproduced images, by matching the local conformations of the source and destination gamut boundaries. A core gamut is constructed inside the destination gamut boundary, within which no compression occurs, i.e., color is preserved unchanged. Colors outside the destination gamut are mapped into the region between the core and destination gamut boundaries in a reversible manner. The results of an experiment are reported, indicating that the new algorithm performed well but that scope remains for further improvement.