Munsell to RGB conversions
The Munsell to RGB conversions used in here come from Paul Centore's web site. No mapping between the two colour systems is exactly perfect, and online resources are scarce. I have done my best to create a true representation of the colour space in the tools above.
However, the caveat remains that the mapping are not perfect and you need to calibrate your monitor in order to make sure you are looking at the right colour when you use these tools.
In addition to the mappings, Paul Centore also sells an indispensible true Munsell value scale which can be found on ebay.