Coastal Blue vs Black grey
Coastal Blue is a Jotun color while Black grey comes from RAL Classic. These are both blue-greys, so the question isn't which hue to choose — it's where within blue-grey to land. At LRV 19 vs 6, Coastal Blue will read as the brighter of the two — a 13-point gap that matters most in north-facing or low-light rooms. At ΔE 31.2, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Coastal Blue vs Black grey in Real Spaces
1 real room side by side. Seeing Coastal Blue 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. Coastal Blue returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Coastal Blue vs Black grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Coastal Blue 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 Coastal Blue comparisons
See how Coastal Blue stacks up against other well-photographed colors across different brands and tones.
