Treron vs Gustavian Blue
Treron (Farrow & Ball) and Gustavian Blue (Jotun) come from different manufacturers. Hue-wise, Treron belongs to the greige-grey family and Gustavian Blue to the blue-grey family. The 14-point LRV gap — 38 for Gustavian Blue vs 25 for Treron — means Gustavian Blue will open up a space more effectively. Where Treron leans warm, Gustavian Blue reads cool — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 20.0 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 7 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Treron vs Gustavian Blue in Real Spaces
7 real rooms side by side. Seeing Treron and Gustavian Blue 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
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. Gustavian Blue reflects noticeably more light off the walls, making the space read more open than Treron.
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. Gustavian Blue returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Kitchen
Kitchens often have the harshest, most revealing light in the house — under-cabinet LEDs and overhead fixtures that strip away subtlety. Gustavian Blue returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Dining Room
Dining rooms often rely on warm incandescent or candlelight, which flatters warm undertones and mutes cool ones. The LRV gap is large enough that Gustavian Blue will make the room feel meaningfully brighter than Treron would.
Home Office
Home office walls matter more than most — you're looking at them all day, and a color that reads fine at first can become tiring over time. Gustavian 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. Gustavian Blue reflects noticeably more light off the walls, making the space read more open than Treron.
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. Gustavian 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
Treron vs Gustavian Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Treron on one side and Gustavian 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 Treron comparisons
See how Treron stacks up against other well-photographed colors across different brands and tones.
