Color fading of entomological specimens was quantified using the Munsell color measurement technique. Some 33 specimens were subjected to ultraviolet radiation in the 300 to 400 nanometer range. Yellow specimens were colorfast and showed little change in hue whereas all other changes in hue were towards yellow. The color change was maximal among the blues or reds with these colors shifting towards yellow early in the experiment. Under conditions of high humidity, greater color change was noted among iridescent than noniridescent specimens. Chroma measurements indicated that all specimens became duller throughout the experiment. -- AATA