Treron vs Blue Harmony
Where Treron belongs to Farrow & Ball's range, Blue Harmony is a Jotun color. Hue-wise, Treron belongs to the greige-grey family and Blue Harmony to the blue-grey family. Treron (LRV 25) reflects noticeably more light than Blue Harmony (LRV 17), a difference of 8 points that becomes especially apparent in rooms with limited natural light. Treron runs warm while Blue Harmony is decidedly neutral, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 19.9, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Treron vs Blue Harmony in Real Spaces
2 real rooms side by side. Seeing Treron and Blue Harmony 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
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. The LRV gap is large enough that Treron will make the room feel meaningfully brighter than Blue Harmony would.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Treron reflects noticeably more light off the walls, making the space read more open than Blue Harmony.
Color Details
Treron vs Blue Harmony Simulated Comparison
5 simulated room previews — drag the slider on each to see Treron on one side and Blue Harmony 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.
