Sudden Sapphire (Behr 600B-6)
Illustrative room. Screen colors vary; test a sample before you paint.
Sudden Sapphire (Behr 600B-6) is a very deep, cool purple from Behr: LRV 18.5, so it reflects about 19 percent of the light that hits it.
Colors that go with Sudden Sapphire
Four Behr colors picked for Sudden Sapphire by this site's color math: a trim white, a deeper purple, 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 Sudden Sapphire, 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 | Gentian | SW 6817 | 18 | 2.1 | very close |
| Benjamin Moore | Waterdrop | CC-902 | 21.5 | 2.9 | noticeably different |
| Valspar | Bedtime Story | 4003-8B | 20 | 3.0 | noticeably different |
| PPG Paints | King's Robe | 1245-6 | 18 | 0.9 | indistinguishable |
Lighter and darker in Behr
The Behr purple colors nearest to Sudden Sapphire (LRV 18.5 (estimated)) by LRV.
Lighter than Sudden Sapphire
Darker than Sudden Sapphire
Color data
| Brand | Behr |
|---|---|
| Color code | 600B-6 |
| Hex | #6376A9 |
| RGB | 99, 118, 169 |
| HSL | 224°, 29%, 53% |
| LRV (light reflectance value) | 18.5 (estimated from the hex) |
| Lab L*, a*, b* | 50.1, 6.5, -29.5 |
| Undertone | Cool Blue |
| Temperature | cool |
| Color family | Purple |
Same paint, two kinds of light
Sudden Sapphire (Behr 600B-6), published as #6376A9
#4D6DA7
#787FAA
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 Sudden Sapphire (Behr 600B-6)?
- Sudden Sapphire has an LRV of 18.5 (estimated from its hex value). LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Sudden Sapphire is a very deep color.
- What is the closest match to Sudden Sapphire in another brand?
- King's Robe (PPG 1245-6) from PPG Paints, at a deltaE of 0.9 (indistinguishable).
- Is Sudden Sapphire warm or cool?
- Behr lists Sudden Sapphire as cool, with a Cool Blue undertone. Its Lab b* value is -29.5; 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.