RAL 730-4 vs Cooled Blue
Where RAL 730-4 belongs to RAL Effect's range, Cooled Blue is a Sherwin-Williams color. Both sit in the blue family, which is useful context if you're narrowing within a single hue direction. Cooled Blue (LRV 41) reflects noticeably more light than RAL 730-4 (LRV 38), a difference of 3 points that becomes especially apparent in rooms with limited natural light. The ΔE 4.0 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
RAL 730-4 vs Cooled Blue in Real Spaces
1 real room side by side. RAL 730-4 and Cooled Blue 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
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. The brightness difference is modest but present — Cooled Blue gives the walls a little more lift.
Color Details
RAL 730-4 vs Cooled Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 730-4 on one side and Cooled Blue 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 730-4 comparisons
See how RAL 730-4 stacks up against other well-photographed colors across different brands and tones.
