Purple Passage (SW 6551)
Illustrative room. Screen colors vary; test a sample before you paint.
Purple Passage (SW 6551) is a very deep, cool purple from Sherwin-Williams: LRV 12, so it reflects about 12 percent of the light that hits it.
Colors that go with Purple Passage
Four Sherwin-Williams colors picked for Purple Passage by this site's color math: a trim white, a deeper purple, 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 Purple Passage, 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 | Pinot Grigio Grape | CSP-460 | 14.9 | 3.8 | noticeably different |
| Behr | Luscious Purple | PMD-90 | 11.3 | 2.1 | very close |
| Valspar | Metropolis Lilac | 4001-6C | 12 | 1.2 | very close |
| PPG Paints | Silverado | 1172-6 | 13 | 4.9 | noticeably different |
Lighter and darker in Sherwin-Williams
The Sherwin-Williams purple colors nearest to Purple Passage (LRV 12) by LRV.
Lighter than Purple Passage
Darker than Purple Passage
Color data
| Brand | Sherwin-Williams |
|---|---|
| Color code | SW 6551 |
| Hex | #645E77 |
| RGB | 100, 94, 119 |
| HSL | 254°, 12%, 42% |
| LRV (light reflectance value) | 12 |
| Lab L*, a*, b* | 41.3, 7.9, -13.2 |
| Undertone | Cool Blue |
| Temperature | cool |
| Color family | Purple |
Same paint, two kinds of light
Purple Passage (SW 6551), published as #645E77
#535575
#756777
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 Purple Passage (SW 6551)?
- Purple Passage has an LRV of 12. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Purple Passage is a very deep color.
- What is the closest match to Purple Passage in another brand?
- Metropolis Lilac (Valspar 4001-6C) from Valspar, at a deltaE of 1.2 (very close).
- Is Purple Passage warm or cool?
- Sherwin-Williams lists Purple Passage as cool, with a Cool Blue undertone. Its Lab b* value is -13.2; 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.