Yellow and purple are true opposites on the color wheel, which is exactly why they make each other glow. This scheme leans warm and a little contemporary, with a golden Saffron Gold doing most of the talking and a moody Deep Plum stepping in for contrast.
The two neutrals are what keep it grown-up instead of playful. Oatmeal Cream and Soft Greige sit in the middle so the saffron and plum never have to touch head-on, and they carry most of the room while the brights do the accenting.
For the finishing touch, a near-black Aubergine Ink sharpens the edges — picture it on a window frame or a slim band of trim. Keep the yellow dominant, use the plum sparingly, and let the soft neutrals do the quiet work that holds the whole thing together.