Congratulations, ilovecocochanel! Re Cobalt, I just ordered a mini Ulysse to see what the color looked like too. It's pretty, IRL darker than this picture. Definitely not like Mykonos or Blue Jean at all. Here it is the middle, with a bunch of other blues.
Colors, from upper left:
Top Row: Turquoise swift BeBop, Turquoise chevre agenda, Mykonos togo Ulysse
Middle Row: Lagon swift Dogon, Cobalt togo Ulysse, Blue jean Ulysse
Bottom Middle: Bleu de Paon le 24 Coin purse
Bottom: Ciel swift Karo
Hope this is helpful and enjoy your new bag!
Thnxxxxx love cobalt!