Petunia Patty

Dark to the point where the light in the room matters more than the color does, and where that light is what reveals the purple undertone at all. Vista Paint lists it as Petunia Patty (1228).

7.0 on the light-reflectance scale is near the floor - this color adds shadow to a room rather than taking it away. A single accent light aimed at this wall will do more to reveal the purple undertone than any amount of ambient room lighting.

Worth checking before committing to a full wall: greens nearby - in a floor, a rug, a piece of furniture - will read as a clash here, not a complement, since the two colors sit at opposite ends of the spectrum.

Next to it, white trim reads brighter and cooler than it does anywhere else in the house - the gap in light reflectance is what does that, not the trim paint itself. The safest multi-color scheme moves from this dark wall to a noticeably lighter secondary tone, then to a near-white ceiling - three genuinely different depths rather than three shades of the same idea (LRV 7.0, 46 and 85, if you're matching by the numbers).

In a hallway or transition space that is not lived in for long stretches, the loss of reflected light matters less than it would in a living room. If a second wall color is wanted in the same room, Kilz Stone Cold keeps the jump obvious rather than muddy (roughly 28 LRV points from this one).

A color this deep already reads as dramatic; a low-sheen finish lets the color carry that without competing highlights.

Behr Deep Mulberry (BXC-51) matches it closely enough that no one will tell them apart on a wall. Only 2 other-brand colors land within delta-E 2 of this one, which makes it comparatively unusual.

Nearly everything Vista Paint makes is lighter than this: 45 of their 2,742 colors sit below it. Vista Paint lists it in the C codes, alongside 1,421 other colors.