Light blue vs Signal blue
Both from RAL Classic's palette. These are both blues, so the question isn't which hue to choose — it's where within blue to land. Light blue (LRV 23) reflects noticeably more light than Signal blue (LRV 10), a difference of 13 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 24.0, 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.
Light blue vs Signal blue in Real Spaces
1 real room side by side. Seeing Light blue and Signal blue in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
House
Seen across an entire facade, subtle tonal differences become pronounced. What reads as nearly the same on a chip often reads as clearly different at scale. Light blue reflects noticeably more light off the walls, making the space read more open than Signal blue.
Color Details
Light blue vs Signal blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Light blue on one side and Signal 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 Light blue comparisons
See how Light blue stacks up against other well-photographed colors across different brands and tones.
