Indigo (SW 6531)
Illustrative room. Screen colors vary; test a sample before you paint.
Indigo (SW 6531) is a very deep, cool blue from Sherwin-Williams: LRV 6, so it reflects about 6 percent of the light that hits it.
Colors that go with Indigo
Three Sherwin-Williams colors picked for Indigo 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 Indigo, 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 | Downpour Blue | 2063-20 | 7.5 | 1.5 | very close |
| Behr | Lake View | PPF-57 | 6.3 | 2.1 | very close |
| Valspar | Indigo Cloth | 4009-7 | 9 | 5.9 | clearly different |
| PPG Paints | Blue Tang | 10-32 | 7 | 0.8 | indistinguishable |
Lighter and darker in Sherwin-Williams
The Sherwin-Williams blue colors nearest to Indigo (LRV 6) by LRV.
Lighter than Indigo
Darker than Indigo
Color data
| Brand | Sherwin-Williams |
|---|---|
| Color code | SW 6531 |
| Hex | #284A70 |
| RGB | 40, 74, 112 |
| HSL | 212°, 47%, 30% |
| LRV (light reflectance value) | 6 |
| Lab L*, a*, b* | 30.7, 0.6, -25.6 |
| Undertone | Cool Blue |
| Temperature | cool |
| Color family | Blue |
Same paint, two kinds of light
Indigo (SW 6531), published as #284A70
#00426E
#405271
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 Indigo (SW 6531)?
- Indigo has an LRV of 6. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Indigo is a very deep color.
- What is the closest match to Indigo in another brand?
- Blue Tang (PPG 10-32) from PPG Paints, at a deltaE of 0.8 (indistinguishable).
- Is Indigo warm or cool?
- Sherwin-Williams lists Indigo as cool, with a Cool Blue undertone. Its Lab b* value is -25.6; 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.