Looks like I mixed things up myself. Carte Bleue was apparently something related to Visa, and CB (for "carte bancaire") is the national network. But people ac

Looks like I mixed things up myself. Carte Bleue was apparently something related to Visa, and CB (for "carte bancaire") is the national network. But people actually still often say "carte bleue" to refer to any kind of payment card (even a Mastercard one). Apparently just because it was the name of the first payment card in France. So yeah, you have to swap carte bleue and carte bancaire in my previous post, I guess.