Gentian blue vs Agreeable Gray
Gentian blue (RAL Classic) and Agreeable Gray (Sherwin-Williams) come from different manufacturers. Gentian blue reads as blue, while Agreeable Gray reads as greige-grey — two distinct hue families, not close cousins. The 51-point LRV gap — 60 for Agreeable Gray vs 9 for Gentian blue — means Agreeable Gray will open up a space more effectively. A ΔE of 62.2 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
Gentian blue vs Agreeable Gray Simulated Comparison
5 simulated room previews — drag the slider on each to see Gentian blue on one side and Agreeable Gray 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 Gentian blue comparisons
See how Gentian blue stacks up against other well-photographed colors across different brands and tones.







































