Cool Charcoal vs Iron Ore
Cool Charcoal (PPG) and Iron Ore (Sherwin-Williams) come from different manufacturers. Both sit in the grey family, which is useful context if you're narrowing within a single hue direction. The 14-point LRV gap — 20 for Cool Charcoal vs 6 for Iron Ore — means Cool Charcoal will open up a space more effectively. A ΔE of 23.7 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 10 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Cool Charcoal vs Iron Ore in Real Spaces
10 real rooms side by side. Seeing Cool Charcoal 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
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. Cool Charcoal reflects noticeably more light off the walls, making the space read more open than Iron Ore.
Bedroom
Bedrooms are typically lit with warmer, lower light than the rest of the house — a condition that flatters warm tones and deepens cool ones. Cool Charcoal returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Kitchen
Kitchens often have the harshest, most revealing light in the house — under-cabinet LEDs and overhead fixtures that strip away subtlety. Cool Charcoal returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Dining Room
Dining rooms often rely on warm incandescent or candlelight, which flatters warm undertones and mutes cool ones. The LRV gap is large enough that Cool Charcoal will make the room feel meaningfully brighter than Iron Ore would.
Bathroom
Small bathrooms intensify color. A shade that seems quiet in a larger room can feel immersive when you're surrounded by it on four walls. Cool Charcoal returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Home Office
Home office walls matter more than most — you're looking at them all day, and a color that reads fine at first can become tiring over time. Cool Charcoal returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Mudroom
In a hardworking space like a mudroom, the depth and warmth of a color reads differently than in a quieter room. The LRV gap is large enough that Cool Charcoal will make the room feel meaningfully brighter than Iron Ore would.
Patio
Exterior colors look different in open light — both tend to read lighter outside than on an interior swatch, and shadows read more strongly. The LRV gap is large enough that Cool Charcoal will make the room feel meaningfully brighter than Iron Ore would.
House
A full exterior is the most demanding test for a paint color — scale and outdoor light both amplify differences that seem small on a swatch. Cool Charcoal returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Front Door
On a front door, the color is both the first and last thing you see — a context where even a modest tonal difference reads clearly. Cool Charcoal reflects noticeably more light off the walls, making the space read more open than Iron Ore.
Color Details
Cool Charcoal vs Iron Ore Simulated Comparison
5 simulated room previews — drag the slider on each to see Cool Charcoal 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 Cool Charcoal comparisons
See how Cool Charcoal stacks up against other well-photographed colors across different brands and tones.
Ammonite reflects far more light (LRV 69 vs 20), opening up a space where Cool Charcoal encloses it.
At LRV 83 vs 20, White Dove is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 20), opening up a space where Cool Charcoal encloses it.
Evergreen Fog reads slightly lighter (LRV 30 vs 20), a gap that shows most in low-lit rooms.
At LRV 52 vs 20, Mizzle is decisively the brighter choice.
Agreeable Gray reflects far more light (LRV 60 vs 20), opening up a space where Cool Charcoal encloses it.
At LRV 58 vs 20, Accessible Beige is decisively the brighter choice.
A 7-point LRV gap (27 vs 20) makes Denim Drift the marginally brighter of the two.
French Gray reflects far more light (LRV 43 vs 20), opening up a space where Cool Charcoal encloses it.
Cool Charcoal reflects far more light (LRV 20 vs 4), opening up a space where Naval encloses it.
At LRV 55 vs 20, Tranquil Dawn is decisively the brighter choice.
A 7-point LRV gap (20 vs 13) makes Cool Charcoal the marginally brighter of the two.
At LRV 44 vs 20, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 20), opening up a space where Cool Charcoal encloses it.
With LRVs of 21 and 20, the two reflect almost the same amount of light.
At LRV 66 vs 20, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 20, Shoji White is decisively the brighter choice.
At LRV 83 vs 20, Snowbound is decisively the brighter choice.
Pigeon reflects far more light (LRV 51 vs 20), opening up a space where Cool Charcoal encloses it.
A 8-point LRV gap (20 vs 12) makes Cool Charcoal the marginally brighter of the two.
A 12-point LRV gap (20 vs 8) makes Cool Charcoal the marginally brighter of the two.
At LRV 68 vs 20, Skimming Stone is decisively the brighter choice.
Dix Blue reflects far more light (LRV 41 vs 20), opening up a space where Cool Charcoal encloses it.
A 8-point LRV gap (20 vs 12) makes Cool Charcoal the marginally brighter of the two.
At LRV 45 vs 20, Saybrook Sage is decisively the brighter choice.
Pale Green reads slightly lighter (LRV 31 vs 20), a gap that shows most in low-lit rooms.
Cool Charcoal reflects far more light (LRV 20 vs 7), opening up a space where Pine Needle encloses it.