Functional Gray vs Calcite
Functional Gray is a Sherwin-Williams color while Calcite comes from Tikkurila. Functional Gray reads as greige-grey, while Calcite reads as grey — two distinct hue families, not close cousins. With LRVs of 37 and 35, they'll behave almost identically in terms of how much light they reflect back into a room. With a ΔE of 2.1, the difference is subtle — you'd need them side by side to reliably tell them apart. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Functional Gray vs Calcite Simulated Comparison
5 simulated room previews — drag the slider on each to see Functional Gray on one side and Calcite 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 Functional Gray comparisons
See how Functional Gray stacks up against other well-photographed colors across different brands and tones.
