Sherwin-Williams Vast Sky#A9C9D7 · LRV 55
Vast Sky reads as a blue-green / cool — light — bounces daylight without going clinical. The notes below cover the spec, what Sherwin-Williams SW 6506 actually looks like under different light, and the closest matches at competing US brands.
Color spec
| Brand | Sherwin-Williams |
| Name | Vast Sky |
| SKU | SW 6506 |
| Hex | #A9C9D7 |
| RGB | 169, 201, 215 |
| HSL | 198°, 37%, 75% |
| LRV | 55 |
| Undertone | blue-green / cool |
| Family | Blue |
About Sherwin-Williams Vast Sky
At LRV 55, Vast Sky is a light color that bounces daylight around a room without tipping into stark white. Its teal undertone is the part to watch: it gets picked up by whatever sits next to it, so test it against your trim, floor and the room's main light before committing. It holds its undertone in most exposures, which is what makes light shades like this so forgiving room to room.
Vast Sky is an easy whole-room color for living spaces and bedrooms, and light enough to carry onto trim or a ceiling if you want a soft, seamless look. Blues calm a room, which makes them popular in bedrooms, bathrooms and home offices.
Kompozit alternative
The closest hex in the Kompozit deck, ranked by ΔE2000 (perceptual color difference). ΔE under 2 is indistinguishable to most eyes; under 5 is a very close visual match.
Closest matches at every US brand
9 brands · top 5 each5 closest matches per brand by ΔE2000, computed against each brand's full deck. Tap any swatch for its full single-color spec; tap the brand title to browse all blue from that brand.
Valspar
Benjamin Moore
PPG / Glidden
Backdrop
Behr
Dunn-Edwards
Clare
Magnolia Home
Similar Sherwin-Williams colors
closest in the Sherwin-Williams deckThe nearest shades to Vast Sky within Sherwin-Williams's own range, ranked by perceptual color distance — useful when you want the same look a touch lighter, darker, or warmer.
Coordinated palette
Generated by hue-rotating #A9C9D7 in HSL space. Pair Vast Sky with one accent and one neutral — the swatches below are starting points, not final picks.
Accessibility (WCAG contrast)
WCAG 2.1: AA = 4.5:1 normal text · AA Large = 3:1 large text · AAA = 7:1 normal text.