Loyal Blue (SW 6510)
Illustrative room. Screen colors vary; test a sample before you paint.
Loyal Blue (SW 6510) is a very deep, cool blue from Sherwin-Williams: LRV 5, so it reflects about 5 percent of the light that hits it.
Colors that go with Loyal Blue
Three Sherwin-Williams colors picked for Loyal Blue by this site's color math: a trim white, a quiet contrast from another family, a dark accent. Sherwin-Williams did not choose these pairings.
Closest match in every other brand
Each brand's closest color to Loyal 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 |
|---|---|---|---|---|---|
| Benjamin Moore | Adriatic Sea | CSP-660 | 8 | 1.3 | very close |
| Behr | Planetarium | 560D-7 | 7.3 | 5.0 | clearly different |
| Valspar | Boisterous Blue | 4009-6 | 8 | 6.9 | clearly different |
| PPG Paints | Plymouth Blue | 13-27 | 7 | 5.1 | clearly different |
Lighter and darker in Sherwin-Williams
The Sherwin-Williams blue colors nearest to Loyal Blue (LRV 5) by LRV.
Lighter than Loyal Blue
Darker than Loyal Blue
Color data
| Brand | Sherwin-Williams |
|---|---|
| Color code | SW 6510 |
| Hex | #01455E |
| RGB | 1, 69, 94 |
| HSL | 196°, 98%, 19% |
| LRV (light reflectance value) | 5 |
| Lab L*, a*, b* | 26.9, -8.8, -20.1 |
| Undertone | Cool Blue |
| Temperature | cool |
| Color family | Blue |
Same paint, two kinds of light
Loyal Blue (SW 6510), published as #01455E
#003D5C
#284D5E
These swatches and the rooms above are a simulation, not a measurement. How the visualizer works
Similar shades from Sherwin-Williams
More from Sherwin-Williams
Common questions
- What is the LRV of Loyal Blue (SW 6510)?
- Loyal Blue has an LRV of 5. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Loyal Blue is a very deep color.
- What is the closest match to Loyal Blue in another brand?
- Adriatic Sea (BM CSP-660) from Benjamin Moore, at a deltaE of 1.3 (very close).
- Is Loyal Blue warm or cool?
- Sherwin-Williams lists Loyal Blue as cool, with a Cool Blue undertone. Its Lab b* value is -20.1; 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.