I agree it appears to lean toward the purple in real life. Going by computer images of color chips is inadequate for color matching. Colors can vary depending on the photography, lighting, and your computer monitor, among other things. Try to get a hold of some real color samples.

Most powder coat places can color match to a chip, though of course it will cost you more.

Alternatively, the color shown below is pretty much what you are looking for. Being a spray can, it's not going to self level off the gun. You would need to rub it out by hand, and clear coat it with something good. Enamel was what the originals used, though I'd assume they were baked.