Really, aside from the obvious physical link between the two rooms, most ensuite designs have at least some visual link so the two become one – from matching bedding to towels or coordinating furniture, to, of course, the wall and floor tiles.
If you’ve nailed the scheme for the bedroom, think about how you could introduce one of the main colours in the bathroom. It could be as simple as a splashback tile behind the basin in a similar shade or a mosaic accent in a shower nook. You might like to pick a patterned tile with hints of a connecting hue in there. This way, the design is different, but together, the rooms still have some cohesion, however small the detail. Tiles like Kashmir Porcelain Pastel have a few shades in them making the pairing even easier.