Chicago Blues (BM 804)
Illustrative room. Screen colors vary; test a sample before you paint.
Chicago Blues (BM 804) is a very deep, cool blue from Benjamin Moore: LRV 17.6, so it reflects about 18 percent of the light that hits it.
Colors that go with Chicago Blues
Four Benjamin Moore colors picked for Chicago Blues by this site's color math: a trim white, a deeper blue, a quiet contrast from another family, a dark accent. Benjamin Moore did not choose these pairings.
Closest match in every other brand
Each brand's closest color to Chicago Blues, 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 | Lupine | SW 6810 | 16 | 3.2 | noticeably different |
| Behr | National Anthem | M520-6 | 14.7 | 1.1 | very close |
| Valspar | Peek-A-Boo Blue | 4007-10C | 15 | 2.7 | noticeably different |
| PPG Paints | Nocturne Shade | 1244-6 | 15 | 3.0 | noticeably different |
Lighter and darker in Benjamin Moore
The Benjamin Moore blue colors nearest to Chicago Blues (LRV 17.6) by LRV.
Lighter than Chicago Blues
Darker than Chicago Blues
Color data
| Brand | Benjamin Moore |
|---|---|
| Color code | 804 |
| Hex | #40729C |
| RGB | 64, 114, 156 |
| HSL | 207°, 42%, 43% |
| LRV (light reflectance value) | 17.6 |
| Lab L*, a*, b* | 46.3, -3.8, -27.8 |
| Undertone | Cool Blue |
| Temperature | cool |
| Color family | Blue |
Same paint, two kinds of light
Chicago Blues (BM 804), published as #40729C
#1E699A
#597B9D
These swatches and the rooms above are a simulation, not a measurement. How the visualizer works
Similar shades from Benjamin Moore
More from Benjamin Moore
Common questions
- What is the LRV of Chicago Blues (BM 804)?
- Chicago Blues has an LRV of 17.6. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Chicago Blues is a very deep color.
- What is the closest match to Chicago Blues in another brand?
- National Anthem (Behr M520-6) from Behr, at a deltaE of 1.1 (very close).
- Is Chicago Blues warm or cool?
- Benjamin Moore lists Chicago Blues as cool, with a Cool Blue undertone. Its Lab b* value is -27.8; 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.