Light field / Coloured border:
A rug with a darker border can be used to divide a larger room into separate areas. The border effectively creates a frame and clearly marks out that part of the room as a distinct space.

However, this strong border can also be used to create additional warmth to enrich an otherwise cool and pale room.
A rug with a clear design and vibrant colours can add warmth and texture to a light wood floor.
A rug can be used as an elegant wall hanging.