Secondary colour
A secondary colour complements the main roles in an identity or interface. It can help distinguish content or introduce variation within a coherent palette
What it means, how it is used and where it comes up, with its related concepts.
What it is and how it works
Its function is defined by each system: it does not always correspond to the same buttons or components. A useful palette documents combinations, states and limits of use. Before applying colour, check that the hierarchy is understandable and that contrast relationships allow the content to be perceived.
Also known as
Secondary color, Accent colour