I think my house is a little boring and I'd like to add a little color. We're getting a new door that's almost the same (old one rotted). What color do you suggest?
Would you paint the shutters blue too? They're black now.
No, I'd leave them black. What I'm envisioning is a really bright welcoming cerulean/royal/cobalt blue door, which you would want to really stand out. Doing the shutters that color too would be overload, especially since they are not shadowed by a porch and would seem REALLY bright.
If you had your heart set on a navy door THEN I might do the shutters too because navy and black don't tend to look good together. Too "close but not quite," you know? But cobalt and black is fine.
I also think a blue door would look great with yellow siding. At our old house we had a blue door which I loved! The color was Hampton Surf by Valspar color matched to some SW paint.