Gentian blue vs RAL 640-6
Where Gentian blue belongs to RAL Classic's range, RAL 640-6 is a RAL Effect color. Both sit in the blue family, which is useful context if you're narrowing within a single hue direction. Gentian blue (LRV 9) reflects noticeably more light than RAL 640-6 (LRV 5), a difference of 4 points that becomes especially apparent in rooms with limited natural light. At ΔE 0.7, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished 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
Gentian blue vs RAL 640-6 Simulated Comparison
5 simulated room previews — drag the slider on each to see Gentian 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 Gentian blue comparisons
See how Gentian blue stacks up against other well-photographed colors across different brands and tones.
