Charcoal Blue vs Old Silk
Charcoal Blue is a Behr color while Old Silk comes from PPG. These are both blue-greys, so the question isn't which hue to choose — it's where within blue-grey to land. With LRVs of 19 and 17, they'll behave almost identically in terms of how much light they reflect back into a room. At ΔE 3.7, 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.
Charcoal Blue vs Old Silk in Real Spaces
2 real rooms side by side. Charcoal Blue and Old Silk 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.
Living Room
Living rooms test a color across a full range of conditions — morning sun, afternoon shade, and evening lamp light all shift how both of these read. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.
Front Door
Front doors are seen in isolation against the rest of the facade, which makes them a high-stakes surface where even subtle differences matter. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.
Color Details
Charcoal Blue vs Old Silk Simulated Comparison
5 simulated room previews — drag the slider on each to see Charcoal Blue on one side and Old Silk 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 Charcoal Blue comparisons
See how Charcoal Blue stacks up against other well-photographed colors across different brands and tones.
