Guest Blue (Valspar 4003-6B)
Illustrative room. Screen colors vary; test a sample before you paint.
Guest Blue (Valspar 4003-6B) is a deep, cool blue from Valspar: LRV 23, so it reflects about 23 percent of the light that hits it.
Colors that go with Guest Blue
Four Valspar colors picked for Guest Blue by this site's color math: a trim white, a deeper blue, a quiet contrast from another family, a dark accent. Valspar did not choose these pairings.
Closest match in every other brand
Each brand's closest color to Guest 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 | Searching Blue | SW 6536 | 21 | 3.7 | noticeably different |
| Benjamin Moore | Stratford Blue | 831 | 25.1 | 1.0 | indistinguishable |
| Behr | Romanesque | 620D-5 | 23 | 2.1 | very close |
| PPG Paints | Evening Hush | 1165-5 | 26 | 2.8 | noticeably different |
Lighter and darker in Valspar
The Valspar blue colors nearest to Guest Blue (LRV 23) by LRV.
Lighter than Guest Blue
Darker than Guest Blue
Color data
| Brand | Valspar |
|---|---|
| Color code | 4003-6B |
| Hex | #7785A3 |
| RGB | 119, 133, 163 |
| HSL | 221°, 19%, 55% |
| LRV (light reflectance value) | 23 |
| Lab L*, a*, b* | 55.4, 1.9, -17.6 |
| Undertone | Cool Blue |
| Temperature | cool |
| Color family | Blue |
Same paint, two kinds of light
Guest Blue (Valspar 4003-6B), published as #7785A3
#647CA1
#8A8EA3
These swatches and the rooms above are a simulation, not a measurement. How the visualizer works
Similar shades from Valspar
More from Valspar
Common questions
- What is the LRV of Guest Blue (Valspar 4003-6B)?
- Guest Blue has an LRV of 23. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Guest Blue is a deep color.
- What is the closest match to Guest Blue in another brand?
- Stratford Blue (BM 831) from Benjamin Moore, at a deltaE of 1.0 (indistinguishable).
- Is Guest Blue warm or cool?
- Valspar lists Guest Blue as cool, with a Cool Blue undertone. Its Lab b* value is -17.6; 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.