You really think this is complicated?
1. There is “OOB blue”, which replicates the AAGlobal color for French pieces.
2. There is HBG’s own “light blue”, which offers another shade of blue.
Despite whatever you perceive on your computer screen, those two shades are distinctive enough to use both on a gameboard and NEVER confuse them. I think the typical plan is to use one shade for Vichy troops, one for Free French.
3. The AA14 shade of blue is somewhat darker than AAGlobal. Obvious at a glance, but not enough that you could put both shades on a gameboard and call them different armies. Not unlike like difference between AAGlobalv1 Italian and Russian pieces. Even among my AA14 French set, the cruisers are notably lighter than the rest of the pieces, though still not the same shade as AAGlobal French.