I think part of the reason is that beyond a certain scope there is limited commercial desire for such levels of exactness. While companies will talk the talk a

I think part of the reason is that beyond a certain scope there is limited commercial desire for such levels of exactness. While companies will talk the talk about always needing their brand colour represented perfectly. I've found very few walk the talk. Presenting printing quotations with PMS versus standard CMYK, they often compromise. Presenting premiums or other production which isn't print-based, suddenly they're happy to compromise rather than organise a custom dip. So while we have CIE as our solid reference, for cosmetic representations, we probably don't need more beyond than that commercially for the bulk of clients.