Mercurial vs Iron Ore
Mercurial (PPG) and Iron Ore (Sherwin-Williams) come from different manufacturers. Hue-wise, Mercurial belongs to the greige-grey family and Iron Ore to the grey family. The 38-point LRV gap — 44 for Mercurial vs 6 for Iron Ore — means Mercurial will open up a space more effectively. A ΔE of 43.9 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.
Mercurial vs Iron Ore in Real Spaces
10 real rooms side by side. Seeing Mercurial 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. Mercurial 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. Mercurial 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. Mercurial 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 Mercurial 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. Mercurial 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. Mercurial 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 Mercurial 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 Mercurial 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. Mercurial returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Mercurial vs Iron Ore Simulated Comparison
5 simulated room previews — drag the slider on each to see Mercurial 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 Mercurial comparisons
See how Mercurial stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 44), opening up a space where Mercurial encloses it.
A 8-point LRV gap (52 vs 44) makes Purbeck Stone the marginally brighter of the two.
At LRV 44 vs 30, Mercurial is decisively the brighter choice.
At LRV 60 vs 44, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 44), opening up a space where Mercurial encloses it.
Mercurial reflects far more light (LRV 44 vs 27), opening up a space where Denim Drift encloses it.
Their light reflectance is nearly identical (LRV 44 vs 43), so neither reads brighter in a room.
Tranquil Dawn reads slightly lighter (LRV 55 vs 44), a gap that shows most in low-lit rooms.
With LRVs of 44 and 44, the two reflect almost the same amount of light.
At LRV 84 vs 44, Pure White is decisively the brighter choice.
Balboa Mist reflects far more light (LRV 66 vs 44), opening up a space where Mercurial encloses it.
Shoji White reflects far more light (LRV 74 vs 44), opening up a space where Mercurial encloses it.
Mercurial reflects far more light (LRV 44 vs 12), opening up a space where Pewter Green encloses it.
Mercurial reflects far more light (LRV 44 vs 8), opening up a space where Duck Green encloses it.
Skimming Stone reflects far more light (LRV 68 vs 44), opening up a space where Mercurial encloses it.
Mercurial reflects far more light (LRV 44 vs 12), opening up a space where Vintage Vogue encloses it.
With LRVs of 45 and 44, the two reflect almost the same amount of light.
At LRV 44 vs 31, Mercurial is decisively the brighter choice.
At LRV 44 vs 7, Mercurial is decisively the brighter choice.