...and after saying I would post these I completely forgot to.
Photoshop CS6
Art © Me, ElementalSpirits
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Thank you! I have a lot of trouble with blue as well (my screens just don't agree between blue and purple) but to keep it from being flat I find playing with the colour balance, curves and adjustment layers helps a lot. You can adjust the colours then colour pick and continue painting until you get what you want.
Link
Overfix8
Gorgeous! So many shades of blue and they all have good contrast with each other (something I find really difficult to pull off with mono color schemes).
Such a perfectly realistic body shape too