Blue Harmony vs Cement grey
Blue Harmony (Jotun) and Cement grey (RAL Classic) come from different manufacturers. Hue-wise, Blue Harmony belongs to the blue-grey family and Cement grey to the grey family. The 8-point LRV gap — 24 for Cement grey vs 17 for Blue Harmony — means Cement grey will open up a space more effectively. A ΔE of 15.9 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Blue Harmony vs Cement grey in Real Spaces
2 real rooms side by side. Seeing Blue Harmony 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.
Living Room
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. Cement grey reads slightly lighter here — a subtle but real difference in how open the space feels.
Bedroom
Bedrooms are typically lit with warmer, lower light than the rest of the house — a condition that flatters warm tones and deepens cool ones. Cement grey has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Color Details
Blue Harmony vs Cement grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Blue Harmony 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 Blue Harmony comparisons
See how Blue Harmony stacks up against other well-photographed colors across different brands and tones.
