Astronomical vs Grey Steel
Astronomical is a Behr color while Grey Steel comes from Cloverdale Paint. Hue-wise, Astronomical belongs to the grey family and Grey Steel to the blue-grey family. With LRVs of 7 and 6, they'll behave almost identically in terms of how much light they reflect back into a room. At ΔE 3.5, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Astronomical vs Grey Steel in Real Spaces
2 real rooms side by side. Astronomical and Grey Steel 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.
Bedroom
Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
Kitchen
Kitchen lighting tends to be bright and directional, which sharpens contrast and makes undertone differences more apparent. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
Color Details
Astronomical vs Grey Steel Simulated Comparison
5 simulated room previews — drag the slider on each to see Astronomical on one side and Grey Steel 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 Astronomical comparisons
See how Astronomical stacks up against other well-photographed colors across different brands and tones.
