I would choose soft blue with a hint of green or dark blue and then complement them with additional exterior decor elements with the same color. And work on landscaping as well.

I see a lot of purple in your roof color and in your brick. Is that true in real life or is that my monitor? If it is an accurate reflection of what is there, then I say go with it. Go with a deep eggplant shutter color on the left (remove the shutters on the right window).

Green and yellow work wonderfully with eggplant. Paint your front door green. Add planter pots in yellow with greenery.