Gunmetal Gray

Technical Profile

What color is Gunmetal Gray? It's a medium warm gray with the hex code #646C64. Colors similar to Gunmetal Gray include RAL Mouse Grey, Behr Gray Owl, Dunn-Edwards Velvet Clover. Comparing swatches side by side is the best way to spot the subtle differences that distinguish these close color relatives. Gunmetal Gray has a warm (golden) undertone, which affects how it pairs with trim, flooring, and adjacent wall colors. Understanding a color's undertone is key to avoiding combinations that clash — it often matters more than the surface color itself. Gunmetal Gray (#646C64) by PPG is a medium gray paint color with a understated, nearly neutral quality. It delivers a versatile mid-tone depth that anchors a room without overwhelming it. On the temperature spectrum this shade leans toward warmth, adding coziness and inviting energy. Its RGB channels are closely balanced, contributing to its neutral, even-keeled visual character. A Light Reflectance Value of 41 gives it moderate light reflection, striking a balance between brightness and depth. A mid-tone neutral at this depth adds sophisticated warmth or coolness to living rooms, bedrooms, and transitional hallways, grounding the space without closing it in. A satin or eggshell finish brings out the richness at this depth, and the slight sheen makes walls easier to maintain. Because Gunmetal Gray carries warm undertones, it pairs naturally with other warm neutrals, creamy whites, and earthy accents like terracotta or caramel. Its warm (golden) undertone means trim and ceiling whites should lean neutral to avoid a jarring clash. If PPG is unavailable in your area, close cross-brand alternatives exist from RAL, Behr, Dunn-Edwards and others. In terms of mood and atmosphere, Gunmetal Gray strikes a cozy, amber-toned balance that feels like late-afternoon light filtering through linen curtains. Designers often reach for shades like this when the goal is to shape how a room feels, not just how it looks. This shade is a natural fit for virtually every design style from minimalist Japandi to rustic farmhouse to sleek contemporary. As part of the PPG palette, Gunmetal Gray benefits from a curated selection of coordinating colors that the brand recommends for trim, accent, and ceiling pairings. As with any paint color, Gunmetal Gray can shift noticeably between natural daylight, warm incandescent, and cool LED lighting — testing a sample swatch on your wall under different conditions is always recommended. Mid-tone shades like this look best when balanced with a mix of textures — think leather seating, brushed brass hardware, woven wool, and raw-edge wood. You can order Gunmetal Gray (1033-6) directly from PPG or through major paint retailers, and we recommend purchasing a peel-and-stick sample to preview it on your wall before buying gallons.