He looks like composer Hoagy Carmichael
This comes up a lot in the books, and this is clearly the influence that Ian Fleming had when designing his character.
But while the original guy was a decent sort of fellow, Bond is described by Vesper Lyne in Casino Royale as a cruel and ruthless version of the man, while Gala Brand in Moonraker says he’s got cold eyes and a cruel mouth.
In the films, obviously, he looks nothing like anyone but the actor portraying him.