September Sun

A color built for commitment, not for blending in. 7854, from Vista Paint.

A chroma of 50.0 is well into the range where the color affects everything nearby - light fixtures, glossy surfaces, even skin tones under it. In a room with plenty of natural light, this can cover more wall area than it could in a dim one, where the same color reads heavier.

The yellow is more noticeable under cool, daylight-balanced bulbs than under standard warm ones, which tend to mute it. Light reflectance reads 48.0, though with this much color in it that number is the smaller half of the story.

This is one of the colors that can change identity with the light - somewhere between yellow and orange, and near enough to the line between them (1°) that both readings are fair. If the room already has blues and cool greys 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.

The lighter the trim beside this, the more it will seem to glow - a side effect of the light-reflectance gap rather than anything special about the trim color. 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 48.0, 67 and 85 on the light-reflectance scale, for reference).

Dunn-Edwards Whisper Blue makes a good second wall color here - different enough to read as a real choice, close enough to still feel related (about 32.8 points apart in light reflectance). This is not a color that benefits from shine - the saturation does the work, and a flat finish lets it do that evenly.

Across the other brands, nothing lands within delta-E 2 of this one - there is no easy substitute.

It is lighter than 51 percent of the Vista Paint range. The name is not unique: Behr QE-19 also sells a color called September Sun, and it is not the same shade. Vista Paint lists it in the K codes, alongside 1,318 other colors.