It also points to some nautical associations: according to legend, sailors wrote with blood whenever ink was not available. I can’t seem to find any further information about this idea (the words “ink” and “blood” and “sailors” turn up a lot of stuff about tattoos; there’s also Sailor brand ink), but perhaps others have heard of it?
J. Herbin was a sailor — according to the Herbin website, he brought back new formulas for sealing wax from his many trips to India, and made ink for Louis XIV. The drawings that adorn the Rouge Hematite box were inspired by his life:
The ship, anchor, and palm tree stand for navigation and discovery
The crown is a reference to the red sealing wax that was used in correspondence with the royal courts in Europe
Interesting stuff, eh?