his opinion these models "are useless for the specification of accurate color", and should be abandoned in favor of more psychometrically relevant models. This is the original paper describing the "hexcone" model, HSV. Smith was a researcher at NYIT's Computer Graphics Lab. He describes HSV's use in an early digital painting program. External links Demonstrative color conversion applet HSV Colors by Hector Zenil, The Wolfram Demonstrations Project. HSV to RGB by CodeBeautify. Color space