California Blue vs RAL 640-6
California Blue is a Benjamin Moore color while RAL 640-6 comes from RAL Effect. These are both blues, so the question isn't which hue to choose — it's where within blue to land. At LRV 10 vs 5, California Blue will read as the brighter of the two — a 4-point gap that matters most in north-facing or low-light rooms. With a ΔE of 1.8, the difference is subtle — you'd need them side by side to reliably tell them apart. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
California Blue vs RAL 640-6 Simulated Comparison
5 simulated room previews — drag the slider on each to see California Blue on one side and RAL 640-6 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 California Blue comparisons
See how California Blue stacks up against other well-photographed colors across different brands and tones.
