Painting one side of a door one color and having the other side another color doesn't usually work well.

If the door has a wood finish on one side, consider keeping it the same wood finish on both sides.

If you choose white for one side, consider choosing white for both sides.

Entry doors are painted in two different colors all the time. But it sounds like you need good ol" WHITE. On all the doors. To match the windows.

Agree white would be a good safe first choice for the front door. With grey flooring, however, if you don't choose white for your door, you could choose a bold dark black. Consider keeping the closet doors white and the door and window trim, too.