Beacon Blue vs RAL 640-5
Beacon Blue is a Behr color while RAL 640-5 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 9 vs 6, Beacon Blue will read as the brighter of the two — a 3-point gap that matters most in north-facing or low-light rooms. At ΔE 5.9, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Beacon Blue vs RAL 640-5 in Real Spaces
3 real rooms side by side. Beacon Blue and RAL 640-5 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. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.
Bedroom
Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
House
At full exterior scale, the difference between these two colors becomes much easier to judge than from a small chip. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
Color Details
Beacon Blue vs RAL 640-5 Simulated Comparison
5 simulated room previews — drag the slider on each to see Beacon Blue on one side and RAL 640-5 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 Beacon Blue comparisons
See how Beacon Blue stacks up against other well-photographed colors across different brands and tones.
