Warm Truffle vs RAL 840-3
Warm Truffle (Dulux) and RAL 840-3 (RAL Effect) come from different manufacturers. Both sit in the greige-grey family, which is useful context if you're narrowing within a single hue direction. Their light reflectance values are nearly the same — 46 vs 46 — so neither will read significantly brighter or darker than the other. A ΔE of 2.9 puts them in subtle territory — distinguishable in direct comparison, less so from across a room. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Warm Truffle vs RAL 840-3 in Real Spaces
2 real rooms side by side. Warm Truffle and RAL 840-3 are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
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. At this scale the difference is subtle — you'd need them side by side, as shown here, to reliably tell them apart.
House
A full exterior is the most demanding test for a paint color — scale and outdoor light both amplify differences that seem small on a swatch. In photos like these you're seeing the difference at its most direct. In a finished room, the distinction is there but not dramatic.
Color Details
Warm Truffle vs RAL 840-3 Simulated Comparison
5 simulated room previews — drag the slider on each to see Warm Truffle on one side and RAL 840-3 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 Warm Truffle comparisons
See how Warm Truffle stacks up against other well-photographed colors across different brands and tones.
Ammonite reflects far more light (LRV 69 vs 46), opening up a space where Warm Truffle encloses it.
At LRV 83 vs 46, White Dove is decisively the brighter choice.
At LRV 46 vs 6, Warm Truffle is decisively the brighter choice.
Purbeck Stone reads slightly lighter (LRV 52 vs 46), a gap that shows most in low-lit rooms.
Warm Truffle reflects far more light (LRV 46 vs 30), opening up a space where Evergreen Fog encloses it.
A 6-point LRV gap (52 vs 46) makes Mizzle the marginally brighter of the two.
Agreeable Gray reflects far more light (LRV 60 vs 46), opening up a space where Warm Truffle encloses it.
A 12-point LRV gap (58 vs 46) makes Accessible Beige the marginally brighter of the two.
At LRV 46 vs 27, Warm Truffle is decisively the brighter choice.
With LRVs of 46 and 43, the two reflect almost the same amount of light.
Warm Truffle reflects far more light (LRV 46 vs 4), opening up a space where Naval encloses it.
A 9-point LRV gap (55 vs 46) makes Tranquil Dawn the marginally brighter of the two.
At LRV 46 vs 13, Warm Truffle is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 46 vs 44), so neither reads brighter in a room.
Pure White reflects far more light (LRV 84 vs 46), opening up a space where Warm Truffle encloses it.
Warm Truffle reflects far more light (LRV 46 vs 21), opening up a space where Artichoke encloses it.
At LRV 66 vs 46, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 46, Shoji White is decisively the brighter choice.
At LRV 83 vs 46, Snowbound is decisively the brighter choice.
Pigeon reads slightly lighter (LRV 51 vs 46), a gap that shows most in low-lit rooms.
At LRV 46 vs 12, Warm Truffle is decisively the brighter choice.
At LRV 46 vs 8, Warm Truffle is decisively the brighter choice.
At LRV 68 vs 46, Skimming Stone is decisively the brighter choice.
Warm Truffle reads slightly lighter (LRV 46 vs 41), a gap that shows most in low-lit rooms.
At LRV 46 vs 12, Warm Truffle is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 46 vs 45), so neither reads brighter in a room.
Warm Truffle reflects far more light (LRV 46 vs 31), opening up a space where Pale Green encloses it.