Diamond Blue (PPG 1237-2)
Illustrative room. Screen colors vary; test a sample before you paint.
Diamond Blue (PPG 1237-2) is a light, cool blue from PPG Paints: LRV 75, so it reflects about 75 percent of the light that hits it.
Colors that go with Diamond Blue
Four PPG Paints colors picked for Diamond Blue by this site's color math: a trim white, a deeper blue, a quiet contrast from another family, a dark accent. PPG Paints did not choose these pairings.
Closest match in every other brand
Each brand's closest color to Diamond 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 | Rhythmic Blue | SW 6806 | 69 | 2.8 | noticeably different |
| Benjamin Moore | Cumulus Cotton | 2063-70 | 76.6 | 1.0 | indistinguishable |
| Behr | Vaporize | M520-1 | 74.5 | 0.7 | indistinguishable |
| Valspar | Skywriter | 4008-9A | 74 | 0.4 | indistinguishable |
Lighter and darker in PPG Paints
The PPG Paints blue colors nearest to Diamond Blue (LRV 75) by LRV.
Lighter than Diamond Blue
Darker than Diamond Blue
Color data
| Brand | PPG Paints |
|---|---|
| Color code | 1237-2 |
| Hex | #CFE4EE |
| RGB | 207, 228, 238 |
| HSL | 199°, 48%, 87% |
| LRV (light reflectance value) | 75 |
| Lab L*, a*, b* | 89.4, -5.0, -7.2 |
| Undertone | Cool |
| Temperature | cool |
| Color family | Blue |
Same paint, two kinds of light
Diamond Blue (PPG 1237-2), published as #CFE4EE
#BCDAEC
#E3EEEE
These swatches and the rooms above are a simulation, not a measurement. How the visualizer works
Similar shades from PPG Paints
More from PPG Paints
Common questions
- What is the LRV of Diamond Blue (PPG 1237-2)?
- Diamond Blue has an LRV of 75. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Diamond Blue is a light color.
- What is the closest match to Diamond Blue in another brand?
- Skywriter (Valspar 4008-9A) from Valspar, at a deltaE of 0.4 (indistinguishable).
- Is Diamond Blue warm or cool?
- PPG Paints lists Diamond Blue as cool, with a Cool undertone. Its Lab b* value is -7.2; 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.