Plum Island

At this depth the violet undertone is not a color choice so much as a mood: it shows at the edges, in raking light, and nowhere else. H0066, from Vista Paint.

At 6.0, light hits this wall and mostly stops there - plan the room's lighting as if the walls were not helping at all. In dim, ambient light this reads as a flat, undifferentiated dark; it takes a direct light source for the violet undertone to surface at all.

Rooms already built around yellows and warm gold are the hardest fit for this color - the two are opposites, and opposites next to each other rarely feel calm.

Anything pale placed against this wall will look paler than it is; anything warm-metal will look warmer. Neither is an illusion the color plays deliberately - it is simple contrast, but worth planning rather than discovering. For layering, pair this with a clearly lighter mid-tone on a secondary wall or cabinetry, and keep the ceiling close to white. The gap between each step should be big enough to see without thinking about it (roughly 6.0 / 46 / 85 on the reflectance scale).

On the wall opposite the room's main window, this catches the most daylight available and is the one wall where the color reads true rather than flat. Sherwin-Williams Stamped Concrete makes a good second wall color here - different enough to read as a real choice, close enough to still feel related (about 29.1 points apart in light reflectance).

A flat or matte finish hides surface imperfections that a color this dark would otherwise flag under any raking light.

Switching brands, PPG Blackberry (1172-7) is the closest equivalent at delta-E 1.43, near enough for most rooms. This is a relatively uncrowded spot in the spectrum - just 1 color from other brands come this close.

Nearly everything Vista Paint makes is lighter than this: 16 of their 2,742 colors sit below it. Light reflectance this exact is unusual: 2 colors in the whole catalog measure within a point of 6.0. The name is not unique: Vista Paint 8214 also sells a color called Plum Island, and it is not the same shade. Vista Paint lists it in the C codes, alongside 1,421 other colors.