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Apollo Blue CW-645
On-screen approximation from the published RGB value. Order a physical sample before you decide.
Undertone: Subtle blue-green undertone
In CIELAB, Apollo Blue sits at L* 54.0, a* -5.3, b* -1.2. Its hue angle is 193° and its chroma is 5.4, so it leans blue-green only slightly — the undertone mostly shows next to whiter or grayer colors. It classifies as cool. Among Benjamin Moore colors with a similar LRV (±5), it is warmer (more yellow) than 20%.
LRV 23.7: dark
Light Reflectance Value runs from 0 (absolute black) to 100 (perfect white). At 23.7, Apollo Blue is lighter than 26% of Benjamin Moore colors. Absorbs most light. Good for accent walls, cabinets, doors and exteriors; needs good lighting indoors.
Closest Sherwin-Williams match to Apollo Blue
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 | |
|---|---|---|---|---|
| Portsmouth | SW 9644 | 0.55 | Practically identical | |
| Taiga | SW 9654 | 4.03 | Similar, clearly different | |
| Studio Blue Green | SW 0047 | 4.13 | Similar, clearly different |
Closest Behr match to Apollo Blue
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 | |
|---|---|---|---|---|
| Nature Retreat | 730F-5 | 1.70 | Very close | |
| Juniper Ash | PPU12-16 | 2.16 | Close — difference visible side by side | |
| Coney Island | N440-5 | 2.80 | Close — difference visible side by side |
Similar Benjamin Moore colors
| Color | Code | ΔE2000 | How close | |
|---|---|---|---|---|
| Templeton Gray | HC-161 | 0.92 | Practically identical | |
| Gray Pinstripe | 1588 | 2.44 | Close — difference visible side by side | |
| Night Train | 1567 | 2.48 | Close — difference visible side by side | |
| Night Train | CC-720 | 2.48 | Close — difference visible side by side | |
| Wetherburn's Blue | CW-580 | 2.70 | Close — difference visible side by side | |
| Georgetown Gray | ES-77 | 3.02 | Close — difference visible side by side |
Lighter and darker versions
Colors from Benjamin Moore with nearly the same hue and saturation, one step lighter or darker.
- Intrigue 1580 · lighter, LRV 24.4
- Shaker Gray 1594 · lighter, LRV 25.9
- Secret AF-710 · lighter, LRV 25.9
- Black Pepper 2130-40 · darker, LRV 21.1
- Steel Wool 2121-20 · darker, LRV 20.7
- Wolf Gray 2127-40 · darker, LRV 21.2
Colors that go with Apollo Blue
Color-theory pairings — the nearest Benjamin Moore color to each rotated hue, keeping the same lightness and saturation:
- Frozen in Time 1448 · complementary (180°)
- Night Train 1567 · analogous (−30°)
- Smokestack Gray 2131-40 · analogous (+30°)
- Sea Life 2118-40 · triadic (120°)
- Gotham CSP-385 · triadic (240°)
Apollo Blue vs popular colors
- Aegean Teal (Benjamin Moore 2136-40, ΔE 4.2) is about as light, more blue/cool, more green, more saturated.
- Amherst Gray (Benjamin Moore HC-167, ΔE 7.7) is darker (LRV 18.8 vs 23.7), more yellow/warm, more red/pink.
- Evergreen Fog (Sherwin-Williams SW 9130, ΔE 10.2) is lighter (LRV 30.4 vs 23.7), more yellow/warm, more red/pink.