Castle Moat (Behr 580B-6)
Illustrative room. Screen colors vary; test a sample before you paint.
Castle Moat (Behr 580B-6) is a deep, cool blue from Behr: LRV 23.9, so it reflects about 24 percent of the light that hits it.
Colors that go with Castle Moat
Four Behr colors picked for Castle Moat 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 Castle Moat, 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 | Perfect Periwinkle | SW 9065 | 23 | 1.0 | very close |
| Benjamin Moore | Blue Dragon | 810 | 27.6 | 1.9 | very close |
| Valspar | Mountain Lake | 4006-8B | 24 | 1.1 | very close |
| PPG Paints | Shrinking Violet | 1162-5 | 22 | 1.9 | very close |
Lighter and darker in Behr
The Behr blue colors nearest to Castle Moat (LRV 23.9 (estimated)) by LRV.
Lighter than Castle Moat
Darker than Castle Moat
Color data
| Brand | Behr |
|---|---|
| Color code | 580B-6 |
| Hex | #6389B5 |
| RGB | 99, 137, 181 |
| HSL | 212°, 36%, 55% |
| LRV (light reflectance value) | 23.9 (estimated from the hex) |
| Lab L*, a*, b* | 56.0, -1.2, -27.2 |
| Undertone | Cool Blue |
| Temperature | cool |
| Color family | Blue |
Same paint, two kinds of light
Castle Moat (Behr 580B-6), published as #6389B5
#4B80B3
#7992B5
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 Castle Moat (Behr 580B-6)?
- Castle Moat has an LRV of 23.9 (estimated from its hex value). LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Castle Moat is a deep color.
- What is the closest match to Castle Moat in another brand?
- Perfect Periwinkle (SW 9065) from Sherwin-Williams, at a deltaE of 1.0 (very close).
- Is Castle Moat warm or cool?
- Behr lists Castle Moat as cool, with a Cool Blue undertone. Its Lab b* value is -27.2; 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.