RAL 660-6 vs Cloudless
RAL 660-6 is a RAL Effect color while Cloudless comes from Sherwin-Williams. These are both blues, so the question isn't which hue to choose — it's where within blue to land. At LRV 56 vs 47, Cloudless will read as the brighter of the two — a 9-point gap that matters most in north-facing or low-light rooms. With a ΔE of 2.8, the difference is subtle — you'd need them side by side to reliably tell them apart. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
RAL 660-6 vs Cloudless in Real Spaces
2 real rooms side by side. RAL 660-6 and Cloudless are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Living Room
Living rooms test a color across a full range of conditions — morning sun, afternoon shade, and evening lamp light all shift how both of these read. Cloudless returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
RAL 660-6 vs Cloudless Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 660-6 on one side and Cloudless 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 660-6 comparisons
See how RAL 660-6 stacks up against other well-photographed colors across different brands and tones.
