Deep Fossil vs Treron
Deep Fossil (Dulux) and Treron (Farrow & Ball) come from different manufacturers. Hue-wise, Deep Fossil belongs to the grey family and Treron to the greige-grey family. The 6-point LRV gap — 31 for Deep Fossil vs 25 for Treron — means Deep Fossil will open up a space more effectively. Where Deep Fossil leans neutral, Treron reads warm — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 10.6 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 4 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Deep Fossil vs Treron in Real Spaces
4 real rooms side by side. Seeing Deep Fossil 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.
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. Deep Fossil reads slightly lighter here — a subtle but real difference in how open the space feels.
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. Deep Fossil has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Dining Room
Dining rooms often rely on warm incandescent or candlelight, which flatters warm undertones and mutes cool ones. The brightness difference is modest but present — Deep Fossil gives the walls a little more lift.
Bathroom
Small bathrooms intensify color. A shade that seems quiet in a larger room can feel immersive when you're surrounded by it on four walls. Deep Fossil has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Color Details
Deep Fossil vs Treron Simulated Comparison
5 simulated room previews — drag the slider on each to see Deep Fossil 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 Deep Fossil comparisons
See how Deep Fossil stacks up against other well-photographed colors across different brands and tones.
At LRV 69 vs 31, Ammonite is decisively the brighter choice.
White Dove reflects far more light (LRV 83 vs 31), opening up a space where Deep Fossil encloses it.
Deep Fossil reflects far more light (LRV 31 vs 6), opening up a space where Iron Ore encloses it.
At LRV 52 vs 31, Purbeck Stone is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 31 vs 30), so neither reads brighter in a room.
Mizzle reflects far more light (LRV 52 vs 31), opening up a space where Deep Fossil encloses it.
At LRV 60 vs 31, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 31), opening up a space where Deep Fossil encloses it.
Deep Fossil reads slightly lighter (LRV 31 vs 27), a gap that shows most in low-lit rooms.
At LRV 43 vs 31, French Gray is decisively the brighter choice.
At LRV 31 vs 4, Deep Fossil is decisively the brighter choice.
Tranquil Dawn reflects far more light (LRV 55 vs 31), opening up a space where Deep Fossil encloses it.
Deep Fossil reflects far more light (LRV 31 vs 13), opening up a space where Bancha encloses it.
Hardwick White reflects far more light (LRV 44 vs 31), opening up a space where Deep Fossil encloses it.
At LRV 84 vs 31, Pure White is decisively the brighter choice.
A 10-point LRV gap (31 vs 21) makes Deep Fossil the marginally brighter of the two.
Balboa Mist reflects far more light (LRV 66 vs 31), opening up a space where Deep Fossil encloses it.
Shoji White reflects far more light (LRV 74 vs 31), opening up a space where Deep Fossil encloses it.
Snowbound reflects far more light (LRV 83 vs 31), opening up a space where Deep Fossil encloses it.
At LRV 51 vs 31, Pigeon is decisively the brighter choice.
Deep Fossil reflects far more light (LRV 31 vs 12), opening up a space where Pewter Green encloses it.
Deep Fossil reflects far more light (LRV 31 vs 8), opening up a space where Duck Green encloses it.
Skimming Stone reflects far more light (LRV 68 vs 31), opening up a space where Deep Fossil encloses it.
A 10-point LRV gap (41 vs 31) makes Dix Blue the marginally brighter of the two.
Deep Fossil reflects far more light (LRV 31 vs 12), opening up a space where Vintage Vogue encloses it.
Saybrook Sage reflects far more light (LRV 45 vs 31), opening up a space where Deep Fossil encloses it.
Their light reflectance is nearly identical (LRV 31 vs 31), so neither reads brighter in a room.