Treron vs S 3005-Y20R
Where Treron belongs to Farrow & Ball's range, S 3005-Y20R is a NCS color. Treron reads as greige-grey, while S 3005-Y20R reads as beige-greige — two distinct hue families, not close cousins. S 3005-Y20R (LRV 41) reflects noticeably more light than Treron (LRV 25), a difference of 16 points that becomes especially apparent in rooms with limited natural light. Both lean warm, so they'll behave similarly in mixed or changing light conditions. With a ΔE of 13.7, 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 S 3005-Y20R in Real Spaces
1 real room side by side. Seeing Treron and S 3005-Y20R 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 S 3005-Y20R will make the room feel meaningfully brighter than Treron would.
Color Details
Treron vs S 3005-Y20R Simulated Comparison
5 simulated room previews — drag the slider on each to see Treron on one side and S 3005-Y20R 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.









































