Mauve is having a real moment, and it is easy to see why. This scheme puts a cool, hazy Frosted Mauve in the lead, with a slightly lighter Dusty Lilac stepping in as a second layer so the look feels soft instead of one-note.
The neutrals do the calming work here. Soft Greige and Warm Oat keep everything quiet and bright, which is exactly what you want behind a color as moody as mauve. Think of them as the breathing room.
Then there is Deep Plum, your one little anchor. A touch of it — in a cushion, a lamp base, a piece of art — gives the whole palette some backbone and stops the soft tones from drifting. Let the mauve dominate and keep the plum to small, deliberate moments.