A study should feel like a held breath, quiet, a little serious, the kind of room where the light stays low and the walls almost lean in to listen. That is what Dusk Mauve does here. Think of it as the gray you get when you fold a drop of plum into clay: it reads as a soft neutral in daylight and warms into dusty rose by lamplight. It is mauve, but the grown-up, grounded kind.
Around it I keep things earthy and warm. A Warm Greige backdrop carries the built-ins and any paneling so the mauve has a calm partner, and a Soft Ivory on the trim and ceiling lifts the whole thing without the cold snap of a bright white. Burnished Clay is the wood note, the desk, the shelves, the floor, and it is what stops the scheme from drifting cool. Clay and mauve share a brown undertone, so they sit together the way coffee sits with chocolate.
For the one deep gesture, run Deep Aubergine on a single bookcase or the back of an alcove. Keep it to about one-fifth of the room at most, no more, or it stops being an accent and starts being the whole mood. Used small, it gives the eye a dark corner to rest in, and it makes the mauve glow.