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Castlegate SW 9558
On-screen approximation from the published RGB value. Order a physical sample before you decide.
Undertone: No measurable undertone (true neutral)
In CIELAB, Castlegate sits at L* 67.4, a* -1.8, b* -0.6. Its hue angle is 199° and its chroma is 1.9, so it has essentially no color cast — a true neutral that will pick up the color of the light and surroundings. It classifies as neutral. Among Sherwin-Williams colors with a similar LRV (±5), it is warmer (more yellow) than 21%.
LRV 37.0: mid-tone
Light Reflectance Value runs from 0 (absolute black) to 100 (perfect white). At 37.0, Castlegate is lighter than 46% of Sherwin-Williams 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 Benjamin Moore match to Castlegate
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 | |
|---|---|---|---|---|
| Slate | CW-700 | 0.89 | Practically identical | |
| Cobblestone Path | 1606 | 0.95 | Practically identical | |
| Adagio | 1593 | 1.56 | Very close |
Closest Behr match to Castlegate
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 | |
|---|---|---|---|---|
| Silent Film | MQ5-30 | 0.48 | Practically identical | |
| Iron Wood | ECC-33-1 | 1.13 | Very close | |
| Chance Of Rain | PPU26-19 | 1.64 | Very close |
Similar Sherwin-Williams colors
| Color | Code | ΔE2000 | How close | |
|---|---|---|---|---|
| Network Gray | SW 7073 | 1.14 | Very close | |
| Gris | SW 7659 | 1.39 | Very close | |
| Breakwater | SW 9638 | 1.52 | Very close | |
| Morning Fog | SW 6255 | 3.08 | Close — difference visible side by side | |
| Uncertain Gray | SW 6234 | 3.23 | Close — difference visible side by side | |
| Gray Matters | SW 7066 | 3.54 | Close — difference visible side by side |
Lighter and darker versions
Colors from Sherwin-Williams with nearly the same hue and saturation, one step lighter or darker.
- Mystical Shade SW 6276 · lighter, LRV 40.2
- Modern Lavender SW 9688 · lighter, LRV 40.5
- Breezy SW 7616 · lighter, LRV 41.0
- Let it Rain SW 9152 · darker, LRV 34.3
- Debonair SW 9139 · darker, LRV 33.9
- Bedrock SW 9563 · darker, LRV 33.7
Colors that go with Castlegate
Castlegate is too close to neutral (chroma 1.9) for hue-based pairings to be meaningful; pair it with any color that shares its lean, and use a crisper white for trim.
Castlegate vs popular colors
- Dorian Gray (Sherwin-Williams SW 7017, ΔE 6.1) is lighter (LRV 38.7 vs 37.0), more yellow/warm, more red/pink, more saturated.
- Oyster Bay (Sherwin-Williams SW 6206, ΔE 6.3) is lighter (LRV 44.1 vs 37.0), more yellow/warm, more green, more saturated.
- Coventry Gray (Benjamin Moore HC-169, ΔE 6.5) is lighter (LRV 48.2 vs 37.0), more yellow/warm.