5. Use black and white to change the mood.
As you would expect, grey works harmoniously with both black and white. However, which shade you use - and how you incorporate it - can really change the look and feel of the room.
A few pieces of black furniture, or some bold accessories will add some contrast to your living room while keeping within the monochrome colour palette. Consider an industrial-style bookcase with a black metal frame, or create a focal point with a black coffee table.
If black feels too harsh, try mixing cotton white in with grey decor to create a light, restful atmosphere in the living room. A fluffy white rug adds both texture and interest, while white-washed wood creates a charming ‘shabby chic’ finish. This is especially good if you’re decorating a smaller room, as the light shades create a feeling of spaciousness.