Somebody told me that if you go to the DMC website (DMC makes a huge variety of fine threads for needlework) you can find a chart that cross-references Pantone standard printing colors with DMC colors. There are other charts that cross-reference Pantone colors to computer colors, and lots of gadgets to help you color-calibrate your computer monitor. This isn't a Pantone chart, it's a Procion chart of all the colors of dyes that they make. Now we just need to get somebody to cross-refer the Procion chart to the DMC chart and the Pantone chart. (And I suppose the ultimate cross-reference would be to spectral wavelengths.)
Photo by Rachel E. Holmen