Green Blue vs Grey Blue
Green Blue (Farrow & Ball) and Grey Blue (RAL Classic) come from different manufacturers. Hue-wise, Green Blue belongs to the blue-green family and Grey Blue to the blue-grey family. The 40-point LRV gap — 47 for Green Blue vs 7 for Grey Blue — means Green Blue will open up a space more effectively. A ΔE of 44.9 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.
Green Blue vs Grey Blue in Real Spaces
4 real rooms side by side. Seeing Green Blue 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. Green Blue returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
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. Green Blue returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
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. Green Blue reflects noticeably more light off the walls, making the space read more open than Grey Blue.
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. Green 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
Green Blue vs Grey Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Green Blue 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 Green Blue comparisons
See how Green Blue stacks up against other well-photographed colors across different brands and tones.
