At the very least there are many sources that study the reflectance spectra of Munsell chips One that is in the public domain is at  The server was awfully slow when I tried to access the links with the ASCII data files I had better luck with  click the squares for reflectance data This website is cited in for instance  Fernando Ayala Jos F Echvarri Pilar Renet and Angel I Negueruela Use of three tristimulus values from surface reflectance spectra to calculate the principal components for reconstructing these spectra by using only three eigenvectors J Opt Soc Am A    abstract  the article cites the website above as Ref   One of the classic sourcesalso cited in the paper aboveseems to be  Kenneth L Kelly Kasson S Gibson and Dorothy Nickerson Tristimulus specifications of the Munsell book of color from spectrophotometric measurements J Opt Soc Am    abstract   The Kuehni book I mentioned above lists a bunch of other sources You can browse it search inside if you have an amazoncom account used at least once to purchase something from amazoncom itself here    Incidentally I now realize that these sources may give enough information to settle the very question I posed But to really settle it I would first need the answer to the following was I wrong in the identification of the Munsells color in my initial posting That is  What is the identityin the Munsell systemof the Munsell color to which the Wikipedia article is referring Is it in fact RP   Having realized my probable mistake above now I dont understand something else Look at this statement in the article professional artists following Munsell color system regard purple as being synonymous with the redviolet color shown at right in order to clearly distinguish purple from violet In what sense are artists supposed to be following Munsell here Obviously not in nomenclature Is it the case that the artists do use Munsells colors in their work but change the names eg Munsells purple  artists violet and Munsells redpurple  artists purple Id rewrite this if I understood what is attempted to be said here