Treron vs Ionian
Where Treron belongs to Farrow & Ball's range, Ionian is a Sherwin-Williams color. Hue-wise, Treron belongs to the greige-grey family and Ionian to the blue family. Treron (LRV 25) reflects noticeably more light than Ionian (LRV 20), a difference of 5 points that becomes especially apparent in rooms with limited natural light. Treron runs warm while Ionian is decidedly cool, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 28.4, 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 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Treron vs Ionian in Real Spaces
1 real room side by side. Seeing Treron and Ionian in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Color Details
Treron vs Ionian Simulated Comparison
5 simulated room previews — drag the slider on each to see Treron on one side and Ionian 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.
