Cool Blue vs Just Walnut
Cool Blue (Benjamin Moore) and Just Walnut (Dulux) come from different manufacturers. Cool Blue reads as blue, while Just Walnut reads as beige-greige — two distinct hue families, not close cousins. The 42-point LRV gap — 72 for Just Walnut vs 30 for Cool Blue — means Just Walnut will open up a space more effectively. Where Cool Blue leans blue, Just Walnut reads warm — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 42.5 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Cool Blue vs Just Walnut Simulated Comparison
5 simulated room previews — drag the slider on each to see Cool Blue on one side and Just Walnut 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 Cool Blue comparisons
See how Cool Blue stacks up against other well-photographed colors across different brands and tones.
