Gosh, this is so subjective. However, I would stay away from anything that "yells" out in the neighborhood. Suggestions would be more subtle colors. Some of it depends on the style of the house. You probably shouldn't put purple paint with orange trim on a mid-century modern or Victorian. Look in magazines or on line at houses similar to yours and see if any colors appeal to you. Talk to a good paint store or professional painter.
Check out these color schemes for houses and see what you like: https://www.improvenet.com/a/top-exterior-house-color-schemes
If you live in a neighborhood with a homeowners association, you would need to know if you have to have approval on paint colors first. Also I would go to my nearest paint store and go through exterior paints to see what jumps out at me and then look for trim colors and front door colors. Here are other ideas
Best is determined by what region you are in, if you are in an area that’s colder, dark colors absorb the heat, lighter colors reflect the heat. You can paint samples on the house and see how you like them.
This article shows popular house colors and combinations: https://www.improvenet.com/a/top-exterior-house-color-schemes