Ambient light. This acts as fill light. “In bathrooms with taller ceilings a cove or cantilever details ambient lighting fixtures can be installed along the perimeter of the space” Whitehead says. “Architectural details such as these can hide the fixture and create indirect lighting”.
However a grid of pot lights is not all you need for a balanced light scheme. Notice that this space also includes a pendant sconces and art lamps (more on those later) as well as a full wall of windows. Including at least three layers of light from different categories and in different locations eliminates strong shadows and adds a sense of sparkle that allows all the other furnishings to look their best.
Instead of or in addition to sconces hidden lights can add a general glow that bounces off the wall and into the room in an even subtler and more diffuse way. Cove lights are built into niches that hide the light source (often a plain LED strip) but hidden lights can also be obscured by medicine cabinets shelving or storage units.