Gossamer Blue (BM 2123-40)
Illustrative room. Screen colors vary; test a sample before you paint.
Gossamer Blue (BM 2123-40) is a medium, neutral blue from Benjamin Moore: LRV 55, so it reflects about 55 percent of the light that hits it.
Colors that go with Gossamer Blue
Four Benjamin Moore colors picked for Gossamer Blue by this site's color math: a trim white, a deeper blue, a quiet contrast from another family, a dark accent. Benjamin Moore did not choose these pairings.
Closest match in every other brand
Each brand's closest color to Gossamer Blue, ranked by CIEDE2000 (deltaE): under 1.0 is indistinguishable, 1.0 to 2.3 very close, 2.3 to 5 noticeably different, over 5 clearly different.
| Brand | Closest color | Code | LRV | deltaE | How close |
|---|---|---|---|---|---|
| Sherwin-Williams | Watery | SW 6478 | 57 | 2.1 | very close |
| Behr | Dayflower | MQ3-54 | 57.8 | 1.3 | very close |
| Valspar | Sparkling Lake | 5002-3B | 58 | 2.8 | noticeably different |
| PPG Paints | Misty Surf | 1034-4 | 55 | 1.0 | indistinguishable |
Lighter and darker in Benjamin Moore
The Benjamin Moore blue colors nearest to Gossamer Blue (LRV 55) by LRV.
Lighter than Gossamer Blue
Darker than Gossamer Blue
Color data
| Brand | Benjamin Moore |
|---|---|
| Color code | 2123-40 |
| Hex | #B3C8C8 |
| RGB | 179, 200, 200 |
| HSL | 180°, 16%, 74% |
| LRV (light reflectance value) | 55 |
| Lab L*, a*, b* | 79.1, -7.1, -2.4 |
| Undertone | Cool Green |
| Temperature | neutral |
| Color family | Blue |
Same paint, two kinds of light
Gossamer Blue (BM 2123-40), published as #B3C8C8
#A1BEC6
#C6D2C8
These swatches and the rooms above are a simulation, not a measurement. How the visualizer works
Similar shades from Benjamin Moore
Comparisons that include Gossamer Blue (BM 2123-40)
More from Benjamin Moore
Common questions
- What is the LRV of Gossamer Blue (BM 2123-40)?
- Gossamer Blue has an LRV of 55. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Gossamer Blue is a medium color.
- What is the closest match to Gossamer Blue in another brand?
- Misty Surf (PPG 1034-4) from PPG Paints, at a deltaE of 1.0 (indistinguishable).
- Is Gossamer Blue warm or cool?
- Benjamin Moore lists Gossamer Blue as neutral, with a Cool Green undertone. Its Lab b* value is -2.4; a higher b* is warmer and yellower, a lower one cooler and bluer.
Sources: LRV and hex as published by the manufacturer, via PaintDB (CC BY 4.0). Color differences are CIEDE2000 values computed by this site from the hex values (data snapshot 2026-10-01). Color names and codes belong to their manufacturers.