When painting an accent wall, keep in mind there are a few basic guidelines that will ensure your space feels cohesive. When creating an accent wall, the key is to choose a colour that will complement the existing adjacent walls. If the room is already a neutral, use a bold choice in the area you want to highlight, such as behind a bed or sofa. You can also combine opposite colours, such as a cool blue or violet with a warm orange or yellow. Similar colours such as blue and green also work well together.