S 4010-B70G vs Grey Blue
Where S 4010-B70G belongs to NCS's range, Grey Blue is a RAL Classic color. These are both blue-greys, so the question isn't which hue to choose — it's where within blue-grey to land. S 4010-B70G (LRV 28) reflects noticeably more light than Grey Blue (LRV 7), a difference of 20 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 29.1, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
S 4010-B70G vs Grey Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see S 4010-B70G on one side and Grey 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 S 4010-B70G comparisons
See how S 4010-B70G stacks up against other well-photographed colors across different brands and tones.
