River Valley vs Grey Blue
River Valley (Dulux) and Grey Blue (RAL Classic) come from different manufacturers. River Valley reads as blue, while Grey Blue reads as blue-grey — two distinct hue families, not close cousins. The 37-point LRV gap — 44 for River Valley vs 7 for Grey Blue — means River Valley will open up a space more effectively. A ΔE of 40.2 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
River Valley vs Grey Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see River Valley 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 River Valley comparisons
See how River Valley stacks up against other well-photographed colors across different brands and tones.
