The phrase "accent color" refers to a specific color used to highlight, emphasize, or add interest to a design or visual composition. It is a color that stands out from the rest and is used sparingly to create visual impact. Full definition
The raspberry accent colour in my house was inspired by this piece of art found at a big box store and custom framed. (mariakillam.com)
The owners have used white throughout their home, which makes it easy to move things around or introduce accent colours for a different look. (idealhome.co.uk)
Also, painting your cabinets white gives you lots of room to add accent colours elsewhere. (styleathome.com)