RAL 840-4 vs Backdrop
RAL 840-4 is a RAL Effect color while Backdrop comes from Sherwin-Williams. RAL 840-4 reads as grey, while Backdrop reads as greige-grey — two distinct hue families, not close cousins. With LRVs of 21 and 20, they'll behave almost identically in terms of how much light they reflect back into a room. At ΔE 5.4, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
RAL 840-4 vs Backdrop in Real Spaces
3 real rooms side by side. RAL 840-4 and Backdrop 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
Living rooms test a color across a full range of conditions — morning sun, afternoon shade, and evening lamp light all shift how both of these read. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.
House
At full exterior scale, the difference between these two colors becomes much easier to judge than from a small chip. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
Kitchen Cabinets
On cabinetry, undertone and temperature become more pronounced against countertops and hardware. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
Color Details
RAL 840-4 vs Backdrop Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 840-4 on one side and Backdrop 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 RAL 840-4 comparisons
See how RAL 840-4 stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 21, White Dove is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 21), opening up a space where RAL 840-4 encloses it.
Evergreen Fog reads slightly lighter (LRV 30 vs 21), a gap that shows most in low-lit rooms.
Agreeable Gray reflects far more light (LRV 60 vs 21), opening up a space where RAL 840-4 encloses it.
At LRV 58 vs 21, Accessible Beige is decisively the brighter choice.
A 6-point LRV gap (27 vs 21) makes Denim Drift the marginally brighter of the two.
French Gray reflects far more light (LRV 43 vs 21), opening up a space where RAL 840-4 encloses it.
At LRV 55 vs 21, Tranquil Dawn is decisively the brighter choice.
At LRV 44 vs 21, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 21), opening up a space where RAL 840-4 encloses it.
At LRV 66 vs 21, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 21, Shoji White is decisively the brighter choice.
A 10-point LRV gap (21 vs 12) makes RAL 840-4 the marginally brighter of the two.
At LRV 21 vs 8, RAL 840-4 is decisively the brighter choice.
At LRV 68 vs 21, Skimming Stone is decisively the brighter choice.
A 10-point LRV gap (21 vs 12) makes RAL 840-4 the marginally brighter of the two.
At LRV 45 vs 21, Saybrook Sage is decisively the brighter choice.
Pale Green reads slightly lighter (LRV 31 vs 21), a gap that shows most in low-lit rooms.