RAL 620-1 vs K431
Where RAL 620-1 belongs to RAL Effect's range, K431 is a Tikkurila color. These are both blues, so the question isn't which hue to choose — it's where within blue to land. K431 (LRV 18) reflects noticeably more light than RAL 620-1 (LRV 11), a difference of 7 points that becomes especially apparent in rooms with limited natural light. The ΔE 9.3 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. 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 620-1 vs K431 Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 620-1 on one side and K431 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 620-1 comparisons
See how RAL 620-1 stacks up against other well-photographed colors across different brands and tones.
