Datasets from the paper "The Utility of RGB Color for Discrimination of Lunar Maturity and Composition", By D. T. Blewett, T. X. Choi, Y.-C. Zheng, and E. A. Cloutis, to be published in the journal Earth and Space Science. Reflectance spectra for Apollo lunar samples 14003, 15601, 70011, 14310, and 65015 were published by Wagner et al. (1987), Icarus 69, 14–28. The spectra were digitized by Amanda Hendrix and Faith Vilas (see Hendrix and Vilas (2006), Astron. J. 132, 1396–1404). I took the spectra that Hendrix and Vilas supplied to me and resampled them to RELAB wavelengths. The spectra are in a tab-delimited text file. The responsivities of the Chang'E-3 PCAM RGB channels were published by X. Ren et al. (2014), Res. Astron. Astrophys. 14, 1557–1566. We digitized the RGB curves from Fig. 2 of the Ren paper. The curves are in tab-delimited text files.