RAL 780-4 vs Cupola Yellow
Where RAL 780-4 belongs to RAL Effect's range, Cupola Yellow is a Sherwin-Williams color. RAL 780-4 reads as beige, while Cupola Yellow reads as beige-yellow — two distinct hue families, not close cousins. Cupola Yellow (LRV 53) reflects noticeably more light than RAL 780-4 (LRV 47), a difference of 7 points that becomes especially apparent in rooms with limited natural light. The ΔE 4.2 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 780-4 vs Cupola Yellow Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 780-4 on one side and Cupola Yellow 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 780-4 comparisons
See how RAL 780-4 stacks up against other well-photographed colors across different brands and tones.
