Keystone Gray
HDC-AC-21 · #B7BBB4 · LRV 49 — neutral with no strong undertone, mid-tone — versatile but shifts visibly with light.
What Color Is Keystone Gray, Really?
Keystone Gray reads as a neutral with no strong undertone — mid-tone — versatile but shifts visibly with light. The notes below cover how Behr HDC-AC-21 behaves in different light and the closest matches at competing US brands.
Best Rooms and Uses for Keystone Gray
Keystone Gray 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 Keystone Gray
Keystone Gray sits in the mid-range at LRV 49, 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 Keystone Gray 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 Behr HDC-AC-21 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 | |
|---|---|---|---|---|
| Sherwin-Williams | March WindSW 7668 · Sherwin-Williams | 3.6 | 49 | Color page → |
| Benjamin Moore | Gray Horse2140-50 · Benjamin Moore | 1.5 | 49 | Color page → |
| Valspar | Granite Dust5006-1C · Valspar | 1.5 | 48.1 | Color page → |
| PPG / Glidden | Gray StonePPG1009-4 · PPG / Glidden | 1.7 | 48 | Color page → |
| Glidden | Gray StonePPG1009-4 · Glidden | 2.0 | 48 | Color page → |
| Dutch Boy | Fair-Minded Gray438-3DB · Dutch Boy | 2.3 | 49 | Color page → |
Similar Behr Colors
The nearest shades to Keystone Gray within Behr'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 #B7BBB4 in HSL space. Pair Keystone Gray with one accent and one neutral — the swatches below are starting points, not final picks.
Have you painted with Keystone Gray?
Rate it — one tap helps the next reader decide.
Ask a Question