. A new color space, I_GP_GT_G, was developed. I_GP_GT_G uses the same structure as IPT, an established hue-uniform color space utilized in gamut mapping applications. While IPT was fit to visual data on the perceived hue, I_GP_GT_G was optimized based on evidence linking the peak wavelength of Gaussian-shaped light spectra to their perceived hues. The performance of I_GP_GT_G on perceived hue data was compared to the performance of other established color spaces. Additionally, an experiment was run to directly compare the hue linearity of I_GP_GT_G with those of other color spaces by using Case V of Thurstone's law of comparative judgment to generate hue-linearity scales. I_GP_GT_G performed well in this experiment but poorly on extant visual data. The mixed results indicate that it is possible to derive a moderately hue-linear color space without visual data.