Finding the closest PMS color with a hex color?

Question

Is there a way to match Hex/RGB colors to the closest PMS (Pantone Matching system) colors?

I'm trying to think of a way to code this, but have no idea where to even get started.

Answer 1

Basically, you'd get the RGB values for the PMS colors, then use one of the several Delta-E formulas to find the differences (and, obviously, choose whichever gave the smallest difference).

Answer 2

There's a ready class with all the values preset that let's you easily convert colors between formats.

Here you can find it: colour