Castle Walls vs Iron Ore
Where Castle Walls belongs to Benjamin Moore's range, Iron Ore is a Sherwin-Williams color. Hue-wise, Castle Walls belongs to the green-grey family and Iron Ore to the grey family. Castle Walls (LRV 41) reflects noticeably more light than Iron Ore (LRV 6), a difference of 35 points that becomes especially apparent in rooms with limited natural light. Castle Walls runs green while Iron Ore is decidedly neutral, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 41.6, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Castle Walls vs Iron Ore Simulated Comparison
5 simulated room previews — drag the slider on each to see Castle Walls 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 Castle Walls comparisons
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