Castlegate vs Steely Gray
Both from Sherwin-Williams's palette. Castlegate reads as grey, while Steely Gray reads as blue-grey — two distinct hue families, not close cousins. Castlegate (LRV 37) reflects noticeably more light than Steely Gray (LRV 30), a difference of 7 points that becomes especially apparent in rooms with limited natural light. Both lean neutral, so they'll behave similarly in mixed or changing light conditions. The ΔE 5.8 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Castlegate vs Steely Gray Simulated Comparison
5 simulated room previews — drag the slider on each to see Castlegate on one side and Steely Gray 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 Castlegate comparisons
See how Castlegate stacks up against other well-photographed colors across different brands and tones.
