S 4010-B70G vs Chalky Blue
S 4010-B70G (NCS) and Chalky Blue (PPG) come from different manufacturers. Both sit in the blue-grey family, which is useful context if you're narrowing within a single hue direction. Their light reflectance values are nearly the same — 28 vs 27 — so neither will read significantly brighter or darker than the other. ΔE 7.0 means they're clearly different, but not dramatically so — they'd pair well in the same room. 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 Chalky Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see S 4010-B70G on one side and Chalky 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.
Ammonite reflects far more light (LRV 69 vs 28), opening up a space where S 4010-B70G encloses it.
At LRV 83 vs 28, White Dove is decisively the brighter choice.
At LRV 28 vs 6, S 4010-B70G is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 28), opening up a space where S 4010-B70G encloses it.
With LRVs of 30 and 28, the two reflect almost the same amount of light.
At LRV 52 vs 28, Mizzle is decisively the brighter choice.
Agreeable Gray reflects far more light (LRV 60 vs 28), opening up a space where S 4010-B70G encloses it.
At LRV 58 vs 28, Accessible Beige is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 28 vs 27), so neither reads brighter in a room.
French Gray reflects far more light (LRV 43 vs 28), opening up a space where S 4010-B70G encloses it.
S 4010-B70G reflects far more light (LRV 28 vs 4), opening up a space where Naval encloses it.
At LRV 55 vs 28, Tranquil Dawn is decisively the brighter choice.
At LRV 28 vs 13, S 4010-B70G is decisively the brighter choice.
At LRV 44 vs 28, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 28), opening up a space where S 4010-B70G encloses it.
S 4010-B70G reads slightly lighter (LRV 28 vs 21), a gap that shows most in low-lit rooms.
At LRV 66 vs 28, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 28, Shoji White is decisively the brighter choice.
At LRV 83 vs 28, Snowbound is decisively the brighter choice.
Pigeon reflects far more light (LRV 51 vs 28), opening up a space where S 4010-B70G encloses it.
At LRV 28 vs 12, S 4010-B70G is decisively the brighter choice.
At LRV 28 vs 8, S 4010-B70G is decisively the brighter choice.
At LRV 68 vs 28, Skimming Stone is decisively the brighter choice.
Dix Blue reflects far more light (LRV 41 vs 28), opening up a space where S 4010-B70G encloses it.
At LRV 28 vs 12, S 4010-B70G is decisively the brighter choice.
At LRV 45 vs 28, Saybrook Sage is decisively the brighter choice.
Pale Green reads slightly lighter (LRV 31 vs 28), a gap that shows most in low-lit rooms.