By exploring tone-on-tone combinations, such as the grey blue of Denim Drift, our Colour of the Year, with a rich, dark blue, you can create a look that has a wonderful sense of unity and a space that feels just right. You can then add to this effect with the playful use of hand-painted shapes, stripes and fades, as well as different patterns and textures.
Source: Clever ways to create colour harmony in your home | Dulux