Cosmos vs Iron Ore
Both from Sherwin-Williams's palette. Cosmos reads as blue, while Iron Ore reads as grey — two distinct hue families, not close cousins. Cosmos (LRV 38) reflects noticeably more light than Iron Ore (LRV 6), a difference of 32 points that becomes especially apparent in rooms with limited natural light. Cosmos runs cool while Iron Ore is decidedly neutral, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 43.3, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 10 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Cosmos vs Iron Ore in Real Spaces
10 real rooms side by side. Seeing Cosmos and Iron Ore in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Living Room
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. The LRV gap is large enough that Cosmos will make the room feel meaningfully brighter than Iron Ore would.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Cosmos reflects noticeably more light off the walls, making the space read more open than Iron Ore.
Kitchen
In a kitchen, colors are seen under bright task lighting that amplifies undertones — what reads neutral elsewhere can show its hand here. Cosmos reflects noticeably more light off the walls, making the space read more open than Iron Ore.
Dining Room
A dining room lit by a dimmed pendant or candles is one of the most forgiving environments for paint — warm light softens almost everything. Cosmos returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Bathroom
Bathrooms are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. Cosmos reflects noticeably more light off the walls, making the space read more open than Iron Ore.
Home Office
The test for a home office color isn't how it looks in a quick glance — it's whether it still feels right after a full day of work. Cosmos reflects noticeably more light off the walls, making the space read more open than Iron Ore.
Mudroom
Mudrooms are seen in passing, often under whatever light comes through the door — a context that favors colors with some depth. Cosmos returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Patio
Outside, paint color competes with sky, landscaping, and direct sun — all of which shift how both of these read compared to an indoor chip. Cosmos returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
House
Seen across an entire facade, subtle tonal differences become pronounced. What reads as nearly the same on a chip often reads as clearly different at scale. Cosmos reflects noticeably more light off the walls, making the space read more open than Iron Ore.
Color Details
Cosmos vs Iron Ore Simulated Comparison
5 simulated room previews — drag the slider on each to see Cosmos on one side and Iron Ore on the other.
Digital color is approximate. These simulations are generated from the manufacturer's hex values and overlaid on grayscale room photos — your screen's calibration, brightness, and viewing angle all affect how they render. Before committing to either color, test physical samples in your own space under the light you actually live with.
More Cosmos comparisons
See how Cosmos stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 38, White Dove is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 38), opening up a space where Cosmos encloses it.
Cosmos reads slightly lighter (LRV 38 vs 30), a gap that shows most in low-lit rooms.
Agreeable Gray reflects far more light (LRV 60 vs 38), opening up a space where Cosmos encloses it.
At LRV 58 vs 38, Accessible Beige is decisively the brighter choice.
A 11-point LRV gap (38 vs 27) makes Cosmos the marginally brighter of the two.
French Gray reads slightly lighter (LRV 43 vs 38), a gap that shows most in low-lit rooms.
At LRV 55 vs 38, Tranquil Dawn is decisively the brighter choice.
A 6-point LRV gap (44 vs 38) makes Hardwick White the marginally brighter of the two.
Pure White reflects far more light (LRV 84 vs 38), opening up a space where Cosmos encloses it.
At LRV 66 vs 38, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 38, Shoji White is decisively the brighter choice.
At LRV 38 vs 12, Cosmos is decisively the brighter choice.
At LRV 68 vs 38, Skimming Stone is decisively the brighter choice.
At LRV 38 vs 12, Cosmos is decisively the brighter choice.
A 8-point LRV gap (45 vs 38) makes Saybrook Sage the marginally brighter of the two.
Cosmos reads slightly lighter (LRV 38 vs 31), a gap that shows most in low-lit rooms.
Cosmos reflects far more light (LRV 38 vs 7), opening up a space where Pine Needle encloses it.
Cosmos reflects far more light (LRV 38 vs 24), opening up a space where Cement grey encloses it.
Guilford Green reflects far more light (LRV 57 vs 38), opening up a space where Cosmos encloses it.
Just Walnut reflects far more light (LRV 72 vs 38), opening up a space where Cosmos encloses it.