Pantone naming scheme

Anyone know why there are greys in the pantone book labeled with numbers and letters and then there are others just named such as Cool Grey 8? Thanks.

The other “Greys” are browns, tans, greens, etc. Just very grey versions. (Look at the mix for 443C for example, there’s no Black ink at all). Cool Grey’s are Black with Blue and white, Warm greys are Black with Red and White.

Great thanks, it’s hard to see the subtle differences where I work , our overhead lighting is terrible, and I’m often making trips to and from the window, can’t wait until we get a light booth to be able to match color chips correctly.

I hear you… I work in a basement of a 110 year old building with no natural light! I frequently make excuses to go outside to “color match”.