Blue color and warm weather is a nice combo ;) I just want to remind you some interesting moments from 'color language'. Blue color has a vast meaning. Blue color is symbol of wisdom, truth, trust, calmness, openness, stability, and peace. According to studies, blue is considered as a masculine color. If you feel very self-esteemed and have strong consciousness, wear blue ;)
I think in my case, the blue outfit says about calmness, openness, stability, and peace. Walking in parks with a good company gives me only positive energy!
I like blue color in my Instagram pictures, there are three of them which might give you some inspiration ;)