Castlegate
SW 9558 · #A0A5A5 · LRV 37 — neutral with no strong undertone, mid-tone — versatile but shifts visibly with light.
- 1Black Fox7
- 2Pewter Green12
- 3Castlegate37
- 4Stardew43
- 5Sea Salt63
What Color Is Castlegate, Really?
Castlegate reads as a neutral with no strong undertone — mid-tone — versatile but shifts visibly with light. The notes below cover how Sherwin-Williams SW 9558 behaves in different light and the closest matches at competing US brands.
Best Rooms and Uses for Castlegate
Castlegate is versatile enough for full rooms but has enough depth to anchor a space, so it suits living rooms, bedrooms and cabinetry alike. Grays like this read as a modern neutral and sit comfortably alongside both warm woods and cool metals.
How Lighting Changes Castlegate
Castlegate sits in the mid-range at LRV 37, so it shifts visibly through the day — lighter and more open in morning light, deeper and moodier after dark. Because it carries almost no measurable hue, it stays a true neutral and pairs cleanly with nearly any trim or floor. South-facing rooms will pull it lighter and warmer, while north light cools it down.
Most complaints about Castlegate are a light mismatch. Upload a photo of your actual room and see it on your walls — then ask for the same wall in north light or evening lamps before you buy a single sample.
Need It From Another Brand?
Any paint counter can custom-tint Sherwin-Williams SW 9558 directly. If you would rather stay in one brand's own deck, these are the closest stock matches, measured as ΔE2000. Under 2 is a difference you will not see on the wall.
| Brand | Closest color | ΔE | LRV | |
|---|---|---|---|---|
| Behr | Iron WoodECC-33-1 · Behr | 1.1 | 38 | Color page → |
| Benjamin Moore | Cobblestone Path1606 · Benjamin Moore | 0.9 | 37 | Color page → |
| Valspar | Cloud MountainV115-2 · Valspar | 1.2 | 38.4 | Color page → |
| PPG / Glidden | Stepping StonePPG1010-4 · PPG / Glidden | 2.0 | 39 | Color page → |
| Glidden | Granite Grey00NN 37/000 · Glidden | 3.4 | 37 | Color page → |
| Dutch Boy | Silvered Chain435-4DB · Dutch Boy | 1.3 | 36 | Color page → |
Similar Sherwin-Williams Colors
The nearest shades to Castlegate within Sherwin-Williams's own range, ranked by perceptual color distance — useful when you want the same look a touch lighter, darker, or warmer.
WCAG 2.1: AA is 4.5 : 1 for normal text, 3 : 1 for large text, AAA is 7 : 1.
Coordinated palette
Generated by hue-rotating #A0A5A5 in HSL space. Pair Castlegate with one accent and one neutral — the swatches below are starting points, not final picks.
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