Rocky Mountain Sky vs Grey Blue
Where Rocky Mountain Sky belongs to Benjamin Moore's range, Grey Blue is a RAL Classic color. Hue-wise, Rocky Mountain Sky belongs to the blue family and Grey Blue to the blue-grey family. Rocky Mountain Sky (LRV 31) reflects noticeably more light than Grey Blue (LRV 7), a difference of 24 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 45.6, 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
Rocky Mountain Sky vs Grey Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Rocky Mountain Sky on one side and Grey Blue 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 Rocky Mountain Sky comparisons
See how Rocky Mountain Sky stacks up against other well-photographed colors across different brands and tones.
