Castle Peak Gray vs Grey Blue
Castle Peak Gray is a Benjamin Moore color while Grey Blue comes from RAL Classic. Castle Peak Gray reads as greige-grey, while Grey Blue reads as blue-grey — two distinct hue families, not close cousins. At LRV 15 vs 7, Castle Peak Gray will read as the brighter of the two — a 7-point gap that matters most in north-facing or low-light rooms. At ΔE 19.7, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Castle Peak Gray vs Grey Blue in Real Spaces
1 real room side by side. Seeing Castle Peak Gray and Grey Blue in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Kitchen Cabinets
On cabinetry, undertone and temperature become more pronounced against countertops and hardware. The brightness difference is modest but present — Castle Peak Gray gives the walls a little more lift.
Color Details
Castle Peak Gray vs Grey Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Castle Peak Gray 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 Castle Peak Gray comparisons
See how Castle Peak Gray stacks up against other well-photographed colors across different brands and tones.
