Cute Pixie

It is dark enough that the room, not the paint, becomes the thing you notice - though the green keeps it from reading as flat black. 0711, from Vista Paint.

At 9.0, 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 green to surface at all.

If the room already has pinks and warm blush tones in the floor, a rug, or the furniture, this color will fight it rather than sit well beside it - the two sit at opposite ends of the color spectrum, which is exactly why they clash instead of blend.

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. A natural scheme here moves in three clear steps: this color on the main wall, a noticeably lighter mid-tone for a second wall or built-in, and a near-white on the ceiling. Each jump should be obvious at a glance, not something you have to squint to tell apart (roughly 9.0, 47 and 85 on the light-reflectance scale, for reference).

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 Autumn Orchid makes a good second wall color here - different enough to read as a real choice, close enough to still feel related (about 20.4 points apart in light reflectance).

Eggshell can work if the wall is in excellent condition, but matte is the more forgiving default for a color at the bottom of the scale.

Benjamin Moore Brazilian Rainforest (651) runs close enough - delta-E 2.29 - that swapping brands should not change how the room looks. Across the other brands, nothing lands within delta-E 2 of this one - there is no easy substitute.

It is lighter than 4 percent of the Vista Paint range. This is a crowded part of the scale - 442 colors measure within a point of 9.0 - so most brands will have something close. Among blacks it is one of the strongest: only 1 percent of them carry more colour. Vista Paint lists it in the C codes, alongside 1,421 other colors.