Granite Boulder vs Iron Ore
Granite Boulder is a PPG color while Iron Ore comes from Sherwin-Williams. Both sit in the grey family, which is useful context if you're narrowing within a single hue direction. At LRV 16 vs 6, Granite Boulder will read as the brighter of the two — a 10-point gap that matters most in north-facing or low-light rooms. At ΔE 21.5, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 10 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Granite Boulder vs Iron Ore in Real Spaces
10 real rooms side by side. Seeing Granite Boulder 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
Living rooms test a color across a full range of conditions — morning sun, afternoon shade, and evening lamp light all shift how both of these read. Granite Boulder returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Bedroom
Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. The LRV gap is large enough that Granite Boulder will make the room feel meaningfully brighter than Iron Ore would.
Kitchen
Kitchen lighting tends to be bright and directional, which sharpens contrast and makes undertone differences more apparent. The LRV gap is large enough that Granite Boulder will make the room feel meaningfully brighter than Iron Ore would.
Dining Room
Dining room light is typically the warmest in the house, which shifts both colors toward the red end of the spectrum compared to daylight. Granite Boulder reflects noticeably more light off the walls, making the space read more open than Iron Ore.
Bathroom
Bathrooms amplify color — the enclosed space and reflective surfaces make what reads subtle elsewhere feel more present here. The LRV gap is large enough that Granite Boulder will make the room feel meaningfully brighter than Iron Ore would.
Home Office
In a home office, wall color sits in your peripheral vision for hours at a time, so temperature and undertone matter more than you might expect. The LRV gap is large enough that Granite Boulder will make the room feel meaningfully brighter than Iron Ore would.
Mudroom
A mudroom color needs to hold up under the most casual scrutiny: a glance as you're coming and going, often in mixed or artificial light. Granite Boulder reflects noticeably more light off the walls, making the space read more open than Iron Ore.
Patio
Patio colors are seen under changing outdoor light throughout the day — morning, midday, and golden hour each reveal different qualities. Granite Boulder reflects noticeably more light off the walls, making the space read more open than Iron Ore.
House
At full exterior scale, the difference between these two colors becomes much easier to judge than from a small chip. The LRV gap is large enough that Granite Boulder will make the room feel meaningfully brighter than Iron Ore would.
Front Door
Front doors are seen in isolation against the rest of the facade, which makes them a high-stakes surface where even subtle differences matter. Granite Boulder returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Granite Boulder vs Iron Ore Simulated Comparison
5 simulated room previews — drag the slider on each to see Granite Boulder 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 Granite Boulder comparisons
See how Granite Boulder stacks up against other well-photographed colors across different brands and tones.
At LRV 69 vs 16, Ammonite is decisively the brighter choice.
White Dove reflects far more light (LRV 83 vs 16), opening up a space where Granite Boulder encloses it.
At LRV 52 vs 16, Purbeck Stone is decisively the brighter choice.
At LRV 30 vs 16, Evergreen Fog is decisively the brighter choice.
Mizzle reflects far more light (LRV 52 vs 16), opening up a space where Granite Boulder encloses it.
At LRV 60 vs 16, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 16), opening up a space where Granite Boulder encloses it.
Denim Drift reads slightly lighter (LRV 27 vs 16), a gap that shows most in low-lit rooms.
At LRV 43 vs 16, French Gray is decisively the brighter choice.
A 12-point LRV gap (16 vs 4) makes Granite Boulder the marginally brighter of the two.
Tranquil Dawn reflects far more light (LRV 55 vs 16), opening up a space where Granite Boulder encloses it.
With LRVs of 16 and 13, the two reflect almost the same amount of light.
Hardwick White reflects far more light (LRV 44 vs 16), opening up a space where Granite Boulder encloses it.
At LRV 84 vs 16, Pure White is decisively the brighter choice.
A 5-point LRV gap (21 vs 16) makes Artichoke the marginally brighter of the two.
Balboa Mist reflects far more light (LRV 66 vs 16), opening up a space where Granite Boulder encloses it.
Shoji White reflects far more light (LRV 74 vs 16), opening up a space where Granite Boulder encloses it.
Snowbound reflects far more light (LRV 83 vs 16), opening up a space where Granite Boulder encloses it.
At LRV 51 vs 16, Pigeon is decisively the brighter choice.
Granite Boulder reads slightly lighter (LRV 16 vs 12), a gap that shows most in low-lit rooms.
Granite Boulder reads slightly lighter (LRV 16 vs 8), a gap that shows most in low-lit rooms.
Skimming Stone reflects far more light (LRV 68 vs 16), opening up a space where Granite Boulder encloses it.
At LRV 41 vs 16, Dix Blue is decisively the brighter choice.
Granite Boulder reads slightly lighter (LRV 16 vs 12), a gap that shows most in low-lit rooms.
Saybrook Sage reflects far more light (LRV 45 vs 16), opening up a space where Granite Boulder encloses it.
At LRV 31 vs 16, Pale Green is decisively the brighter choice.
A 9-point LRV gap (16 vs 7) makes Granite Boulder the marginally brighter of the two.