I've heard Outremer has a more purplish undertone to it, and it seems to be the case from the pictures posted on another thread.
The sales manager I spoke to tells me that Outremer is slightly deeper/darker than Electric Blue.
they are not the same shade of color at all. i saw both IRL, EB is an electric blue, outremer has purple in it, it's not a true blue color, it's very bright though.
and it's not as subtle as indigo. it's a bright pop purple blue bag.