Mirror Lake (Behr M520-4)
Illustrative room. Screen colors vary; test a sample before you paint.
Mirror Lake (Behr M520-4) is a deep, cool blue from Behr: LRV 36.5, so it reflects about 37 percent of the light that hits it.
Colors that go with Mirror Lake
Four Behr colors picked for Mirror Lake by this site's color math: a trim white, a deeper blue, 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 Mirror Lake, 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 | Cosmos | SW 6528 | 38 | 4.4 | noticeably different |
| Benjamin Moore | San Francisco Bay | 802 | 37.8 | 1.7 | very close |
| Valspar | Skyscape | 4007-10A | 38 | 2.7 | noticeably different |
| PPG Paints | Serene Sea | 1158-4 | 36 | 2.6 | noticeably different |
Lighter and darker in Behr
The Behr blue colors nearest to Mirror Lake (LRV 36.5 (estimated)) by LRV.
Lighter than Mirror Lake
Darker than Mirror Lake
Color data
| Brand | Behr |
|---|---|
| Color code | M520-4 |
| Hex | #7AA8CB |
| RGB | 122, 168, 203 |
| HSL | 206°, 44%, 64% |
| LRV (light reflectance value) | 36.5 (estimated from the hex) |
| Lab L*, a*, b* | 66.9, -6.4, -22.7 |
| Undertone | Cool Blue |
| Temperature | cool |
| Color family | Blue |
Same paint, two kinds of light
Mirror Lake (Behr M520-4), published as #7AA8CB
#639EC9
#90B2CB
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 Mirror Lake (Behr M520-4)?
- Mirror Lake has an LRV of 36.5 (estimated from its hex value). LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Mirror Lake is a deep color.
- What is the closest match to Mirror Lake in another brand?
- San Francisco Bay (BM 802) from Benjamin Moore, at a deltaE of 1.7 (very close).
- Is Mirror Lake warm or cool?
- Behr lists Mirror Lake as cool, with a Cool Blue undertone. Its Lab b* value is -22.7; 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.