Cosmic Cobalt vs Treron
Where Cosmic Cobalt belongs to Behr's range, Treron is a Farrow & Ball color. Cosmic Cobalt reads as blue, while Treron reads as greige-grey — two distinct hue families, not close cousins. Treron (LRV 25) reflects noticeably more light than Cosmic Cobalt (LRV 10), a difference of 15 points that becomes especially apparent in rooms with limited natural light. Cosmic Cobalt runs blue while Treron is decidedly warm, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 46.1, 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.
Cosmic Cobalt vs Treron in Real Spaces
2 real rooms side by side. Seeing Cosmic Cobalt and Treron in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Home Office
The test for a home office color isn't how it looks in a quick glance — it's whether it still feels right after a full day of work. Treron reflects noticeably more light off the walls, making the space read more open than Cosmic Cobalt.
Front Door
A front door is a focal point — small color differences read clearly at this concentrated scale. The LRV gap is large enough that Treron will make the room feel meaningfully brighter than Cosmic Cobalt would.
Color Details
Cosmic Cobalt vs Treron Simulated Comparison
5 simulated room previews — drag the slider on each to see Cosmic Cobalt on one side and Treron 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 Cosmic Cobalt comparisons
See how Cosmic Cobalt stacks up against other well-photographed colors across different brands and tones.
