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Rocky Mountain Sky 2066-40
On-screen approximation from the published RGB value. Order a physical sample before you decide.
Undertone: Saturated blue (a color, not a neutral)
In CIELAB, Rocky Mountain Sky sits at L* 59.1, a* -9.4, b* -42.2. Its hue angle is 257° and its chroma is 43.2, so it reads as an outright blue rather than a neutral. It classifies as cool. Among Benjamin Moore colors with a similar LRV (±5), it is warmer (more yellow) than 0%.
LRV 31.0: mid-tone
Light Reflectance Value runs from 0 (absolute black) to 100 (perfect white). At 31.0, Rocky Mountain Sky is lighter than 34% of Benjamin Moore colors. Reads clearly as a color. Best in rooms with good natural light, or as an accent wall; small dark rooms may feel smaller.
Closest Sherwin-Williams match to Rocky Mountain Sky
Ranked by CIEDE2000 color difference (ΔE) computed from published RGB values. Below 2 is hard to tell apart on the wall; above 4 is a different color.
| Color | Code | ΔE2000 | How close | |
|---|---|---|---|---|
| Dynamic Blue | SW 6958 | 3.69 | Close — difference visible side by side | |
| Jacaranda | SW 6802 | 6.85 | Similar, clearly different | |
| Major Blue | SW 6795 | 7.44 | Similar, clearly different |
Closest Behr match to Rocky Mountain Sky
Ranked by CIEDE2000 color difference (ΔE) computed from published RGB values. Below 2 is hard to tell apart on the wall; above 4 is a different color. Behr does not publish LRV, so Behr values here are estimates.
| Color | Code | ΔE2000 | How close | |
|---|---|---|---|---|
| Perfect Sky | P510-5 | 2.83 | Close — difference visible side by side | |
| Peaceful River | P500-5 | 4.03 | Similar, clearly different | |
| Celebration Blue | MQ4-57 | 4.44 | Similar, clearly different |
Similar Benjamin Moore colors
| Color | Code | ΔE2000 | How close | |
|---|---|---|---|---|
| Utah Sky | 2065-40 | 1.26 | Very close | |
| Clearest Ocean Blue | 2064-40 | 2.07 | Close — difference visible side by side | |
| Bayberry Blue | 790 | 3.03 | Close — difference visible side by side | |
| Lake Tahoe | 783 | 3.91 | Close — difference visible side by side | |
| Sailor's Sea Blue | 2063-40 | 4.20 | Similar, clearly different | |
| Electric Blue | 2061-40 | 5.30 | Similar, clearly different |
Lighter and darker versions
Colors from Benjamin Moore with nearly the same hue and saturation, one step lighter or darker.
- Bayberry Blue 790 · lighter, LRV 33.1
- True Blue 2066-50 · lighter, LRV 45.5
- Athens Blue 797 · darker, LRV 18.7
- Blue Macaw 784 · darker, LRV 18.2
- Laguna Blue 2059-30 · darker, LRV 16.7
Colors that go with Rocky Mountain Sky
Color-theory pairings — the nearest Benjamin Moore color to each rotated hue, keeping the same lightness and saturation:
- Goldenhurst 196 · complementary (180°)
- Dream I Can Fly 769 · analogous (−30°)
- Brazilian Blue 817 · analogous (+30°)
- Deco Rose 1328 · triadic (120°)
- Richmond Green 553 · triadic (240°)
Rocky Mountain Sky vs popular colors
- Aegean Teal (Benjamin Moore 2136-40, ΔE 19.0) is darker (LRV 25.1 vs 31.0), more yellow/warm, more muted.
- Van Deusen Blue (Benjamin Moore HC-156, ΔE 25.2) is darker (LRV 12.0 vs 31.0), more yellow/warm, more red/pink, more muted.
- Smoke (Benjamin Moore 2122-40, ΔE 25.5) is lighter (LRV 56.4 vs 31.0), more yellow/warm, more red/pink, more muted.