What is the paint color code for a 1981 Yamaha motorcycle color black-blue?

It is a number specifying exactly what shade of Black-Blue it is, and it should be on a little sticker somewhere on the bike, if it is the Original color of the bike

It is a number specifying exactly what shade of Black-Blue it is, and it should be on a little sticker somewhere on the bike, if it is the Original color of the bike