Rookwood Dark Red

This is at the bottom of the scale, where a color stops being a backdrop and the red sits underneath, felt rather than seen outright. Sherwin-Williams files it as SW 2801.

LRV 3.2 means it returns almost no light, so whatever lighting the room has is the lighting you will see. It swallows shadow, so the room reads by its light sources and architectural lines.

This color and blues and cool greys don't get along in the same room - they sit on opposite sides of the spectrum, so pairing them tends to feel like tension rather than contrast.

Wood tones next to this read darker and richer than they do against a paler wall; it is one of the more dependable effects of putting a light-absorbing color next to anything reflective. If the room needs more than one wall color, keep the steps far apart: this color, then something clearly lighter for a second surface, then a bright white above. Two similar tones just look like a mismatch; three distinct ones read as a plan (about 3.2 to 44 to 85 in LRV terms).

In a small, enclosed room - a powder room, a reading nook - this can work on every wall, since there is no large floor area losing light to it. For a secondary wall, Behr Gotham Gray gives a natural step up in brightness without feeling like a mismatch (roughly 24.8 LRV points apart).

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

No other brand has a color within delta-E 2 of this one - a genuinely uncommon shade.

Nearly everything Sherwin-Williams makes is lighter than this: 34 of their 1,526 colors sit below it. Sherwin-Williams lists it in the 2000 series, alongside 63 other colors.