Slate Blue vs River Valley
Slate Blue (Benjamin Moore) and River Valley (Dulux) come from different manufacturers. These are both blues, so the question isn't which hue to choose — it's where within blue to land. Their light reflectance values are nearly the same — 43 vs 44 — so neither will read significantly brighter or darker than the other. Where Slate Blue leans blue, River Valley reads cool — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 2.8 puts them in subtle territory — distinguishable in direct comparison, less so from across a room. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Slate Blue vs River Valley Simulated Comparison
5 simulated room previews — drag the slider on each to see Slate Blue on one side and River Valley 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 Slate Blue comparisons
See how Slate Blue stacks up against other well-photographed colors across different brands and tones.
