Obsidian Green vs Grey Blue
Obsidian Green (Little Greene) and Grey Blue (RAL Classic) come from different manufacturers. Obsidian Green reads as green, while Grey Blue reads as blue-grey — two distinct hue families, not close cousins. The 6-point LRV gap — 7 for Grey Blue vs 1 for Obsidian Green — means Grey Blue will open up a space more effectively. A ΔE of 24.6 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 4 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Obsidian Green vs Grey Blue in Real Spaces
4 real rooms side by side. Seeing Obsidian Green and Grey Blue in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Bedroom
Bedrooms are typically lit with warmer, lower light than the rest of the house — a condition that flatters warm tones and deepens cool ones. Grey Blue has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
House
A full exterior is the most demanding test for a paint color — scale and outdoor light both amplify differences that seem small on a swatch. Grey Blue has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Front Door
On a front door, the color is both the first and last thing you see — a context where even a modest tonal difference reads clearly. Grey Blue reads slightly lighter here — a subtle but real difference in how open the space feels.
Kitchen Cabinets
Cabinet color is always seen in context — against countertops, backsplash, and hardware — which amplifies undertone differences that might disappear on a plain wall. Grey Blue has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Color Details
Obsidian Green vs Grey Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Obsidian Green on one side and Grey Blue 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 Obsidian Green comparisons
See how Obsidian Green stacks up against other well-photographed colors across different brands and tones.
