So, you are saying you have an ensuite arrangement with a hallway connecting bedroom and bath? As long as the trim is one color, consider a darker tone or coordinate of the bedroom wall paint...which is what brand/color?

I would say the color of the bedroom. It sounds like there isn't a cased opening between the bedroom and the hall? If the blue and off white clash, then a bridging color like elcieg suggests could be a good idea.