Neptune Blue (Behr 570D-6)
Illustrative room. Screen colors vary; test a sample before you paint.
Neptune Blue (Behr 570D-6) is a very deep, cool blue from Behr: LRV 14.7, so it reflects about 15 percent of the light that hits it.
Colors that go with Neptune Blue
Four Behr colors picked for Neptune Blue by this site's color math: a trim white, a deeper blue, a quiet contrast from another family, a dark accent. Behr did not choose these pairings.
Closest match in every other brand
Each brand's closest color to Neptune 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 | Inky Blue | SW 9149 | 15 | 2.1 | very close |
| Benjamin Moore | Bedford Blue | 1679 | 17.4 | 1.6 | very close |
| Valspar | Empire Fleet Blue | 4006-6C | 14 | 2.2 | very close |
| PPG Paints | Smoke Blue | 1156-5 | 17 | 3.1 | noticeably different |
Lighter and darker in Behr
The Behr blue colors nearest to Neptune Blue (LRV 14.7 (estimated)) by LRV.
Lighter than Neptune Blue
Darker than Neptune Blue
Color data
| Brand | Behr |
|---|---|
| Color code | 570D-6 |
| Hex | #4E6F87 |
| RGB | 78, 111, 135 |
| HSL | 205°, 27%, 42% |
| LRV (light reflectance value) | 14.7 (estimated from the hex) |
| Lab L*, a*, b* | 45.3, -5.2, -16.9 |
| Undertone | Cool Blue |
| Temperature | cool |
| Color family | Blue |
Same paint, two kinds of light
Neptune Blue (Behr 570D-6), published as #4E6F87
#386685
#627887
These swatches and the rooms above are a simulation, not a measurement. How the visualizer works
Similar shades from Behr
More from Behr
Common questions
- What is the LRV of Neptune Blue (Behr 570D-6)?
- Neptune Blue has an LRV of 14.7 (estimated from its hex value). LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Neptune Blue is a very deep color.
- What is the closest match to Neptune Blue in another brand?
- Bedford Blue (BM 1679) from Benjamin Moore, at a deltaE of 1.6 (very close).
- Is Neptune Blue warm or cool?
- Behr lists Neptune Blue as cool, with a Cool Blue undertone. Its Lab b* value is -16.9; a higher b* is warmer and yellower, a lower one cooler and bluer.
Sources: hex as published by the manufacturer, via PaintDB (CC BY 4.0); LRV is not published by Behr for this color and is estimated here from the color's own hex value. 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.