Celestial Blue vs RAL 730-5
Where Celestial Blue belongs to Little Greene's range, RAL 730-5 is a RAL Effect color. Celestial Blue reads as blue-green, while RAL 730-5 reads as blue — two distinct hue families, not close cousins. Celestial Blue (LRV 44) reflects noticeably more light than RAL 730-5 (LRV 34), a difference of 10 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 12.8, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Celestial Blue vs RAL 730-5 in Real Spaces
1 real room side by side. Seeing Celestial Blue and RAL 730-5 in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
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 LRV gap is large enough that Celestial Blue will make the room feel meaningfully brighter than RAL 730-5 would.
Color Details
Celestial Blue vs RAL 730-5 Simulated Comparison
5 simulated room previews — drag the slider on each to see Celestial Blue on one side and RAL 730-5 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 Celestial Blue comparisons
See how Celestial Blue stacks up against other well-photographed colors across different brands and tones.
