We all know RGB, probably CMYK and maybe even Hexadecimal for representing colour.
But Pantone…? Firstly, it’s a company. Secondly, PMS. No, a different PMS — the Pantone Matching System. It’s a patented colour space[footnote]A defined area of colour — arguably colour is infinite, but we need to constrain it.[/footnote] they developed that caught on, and is now used all over the shop: flags and military seals, art projects, logos, and lots and lots of branding.