Colonial Blue vs Cement grey
Colonial Blue (Benjamin Moore) and Cement grey (RAL Classic) come from different manufacturers. Hue-wise, Colonial Blue belongs to the blue family and Cement grey to the grey family. The 11-point LRV gap — 35 for Colonial Blue vs 24 for Cement grey — means Colonial Blue will open up a space more effectively. A ΔE of 24.1 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Colonial Blue vs Cement grey in Real Spaces
1 real room side by side. Seeing Colonial Blue and Cement grey in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Bathroom
Small bathrooms intensify color. A shade that seems quiet in a larger room can feel immersive when you're surrounded by it on four walls. Colonial Blue returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Colonial Blue vs Cement grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Colonial Blue on one side and Cement grey 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 Colonial Blue comparisons
See how Colonial Blue stacks up against other well-photographed colors across different brands and tones.
