Form vs Black grey
Form is a Jotun color while Black grey comes from RAL Classic. Hue-wise, Form belongs to the greige-grey family and Black grey to the blue-grey family. At LRV 30 vs 6, Form will read as the brighter of the two — a 24-point gap that matters most in north-facing or low-light rooms. At ΔE 41.9, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Form vs Black grey in Real Spaces
2 real rooms side by side. Seeing Form and Black grey in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
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. Form returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Kitchen Cabinets
On cabinetry, undertone and temperature become more pronounced against countertops and hardware. The LRV gap is large enough that Form will make the room feel meaningfully brighter than Black grey would.
Color Details
Form vs Black grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Form on one side and Black grey 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 Form comparisons
See how Form stacks up against other well-photographed colors across different brands and tones.
