Nautilus (SW 6780)
Illustrative room. Screen colors vary; test a sample before you paint.
Nautilus (SW 6780) is a medium, cool blue from Sherwin-Williams: LRV 42, so it reflects about 42 percent of the light that hits it.
Colors that go with Nautilus
Four Sherwin-Williams colors picked for Nautilus by this site's color math: a trim white, a deeper blue, 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 Nautilus, 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 | Seaside Blue | 2054-50 | 47.4 | 2.7 | noticeably different |
| Behr | Riverside Blue | 530D-5 | 39.8 | 1.2 | very close |
| Valspar | Sea Serenade | 5002-8A | 40 | 1.8 | very close |
| PPG Paints | High Dive | 1236-5 | 41 | 2.7 | noticeably different |
Lighter and darker in Sherwin-Williams
The Sherwin-Williams blue colors nearest to Nautilus (LRV 42) by LRV.
Lighter than Nautilus
Darker than Nautilus
Color data
| Brand | Sherwin-Williams |
|---|---|
| Color code | SW 6780 |
| Hex | #71B8C7 |
| RGB | 113, 184, 199 |
| HSL | 190°, 43%, 61% |
| LRV (light reflectance value) | 42 |
| Lab L*, a*, b* | 70.8, -18.4, -14.6 |
| Undertone | Cool Blue |
| Temperature | cool |
| Color family | Blue |
Same paint, two kinds of light
Nautilus (SW 6780), published as #71B8C7
#58AEC5
#88C2C7
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 Nautilus (SW 6780)?
- Nautilus has an LRV of 42. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Nautilus is a medium color.
- What is the closest match to Nautilus in another brand?
- Riverside Blue (Behr 530D-5) from Behr, at a deltaE of 1.2 (very close).
- Is Nautilus warm or cool?
- Sherwin-Williams lists Nautilus as cool, with a Cool Blue undertone. Its Lab b* value is -14.6; 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.