A dyad is a pair of colours that are either complementary or otherwise considered visually harmonious when used together. Unlike a single colour scheme, a dyad uses two distinct hues to create contrast while maintaining balance in a composition.
In photography, graphic design, and visual arts, dyads are employed to enhance aesthetic appeal, direct viewer attention, or convey mood. Choosing the right dyad can help create striking images with pleasing colour relationships, whether in lighting, post-processing, or compositional planning.