RAL 660-M vs Stratford Blue
RAL 660-M is a RAL Effect color while Stratford Blue comes from Sherwin-Williams. These are both blues, so the question isn't which hue to choose — it's where within blue to land. With LRVs of 24 and 22, they'll behave almost identically in terms of how much light they reflect back into a room. At ΔE 5.3, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
RAL 660-M vs Stratford Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 660-M on one side and Stratford 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 RAL 660-M comparisons
See how RAL 660-M stacks up against other well-photographed colors across different brands and tones.
