RAL 840-2 vs Guild Grey
Where RAL 840-2 belongs to RAL Effect's range, Guild Grey is a Sherwin-Williams color. RAL 840-2 reads as greige-grey, while Guild Grey reads as grey — two distinct hue families, not close cousins. RAL 840-2 (LRV 66) reflects noticeably more light than Guild Grey (LRV 63), a difference of 3 points that becomes especially apparent in rooms with limited natural light. At ΔE 2.2, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished room. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
RAL 840-2 vs Guild Grey in Real Spaces
3 real rooms side by side. RAL 840-2 and Guild Grey 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
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 two are close enough that the choice comes down to finer qualities — undertone, texture, what the color sits next to.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. At this scale the difference is subtle — you'd need them side by side, as shown here, to reliably tell them apart.
Bathroom
Bathrooms are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. At this scale the difference is subtle — you'd need them side by side, as shown here, to reliably tell them apart.
Color Details
RAL 840-2 vs Guild Grey Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 840-2 on one side and Guild Grey 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 840-2 comparisons
See how RAL 840-2 stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 66, White Dove is decisively the brighter choice.
RAL 840-2 reflects far more light (LRV 66 vs 52), opening up a space where Purbeck Stone encloses it.
RAL 840-2 reflects far more light (LRV 66 vs 30), opening up a space where Evergreen Fog encloses it.
RAL 840-2 reads slightly lighter (LRV 66 vs 60), a gap that shows most in low-lit rooms.
A 8-point LRV gap (66 vs 58) makes RAL 840-2 the marginally brighter of the two.
At LRV 66 vs 27, RAL 840-2 is decisively the brighter choice.
RAL 840-2 reflects far more light (LRV 66 vs 43), opening up a space where French Gray encloses it.
A 11-point LRV gap (66 vs 55) makes RAL 840-2 the marginally brighter of the two.
At LRV 66 vs 44, RAL 840-2 is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 66), opening up a space where RAL 840-2 encloses it.
Their light reflectance is nearly identical (LRV 66 vs 66), so neither reads brighter in a room.
A 8-point LRV gap (74 vs 66) makes Shoji White the marginally brighter of the two.
At LRV 66 vs 12, RAL 840-2 is decisively the brighter choice.
At LRV 66 vs 8, RAL 840-2 is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 68 vs 66), so neither reads brighter in a room.
At LRV 66 vs 12, RAL 840-2 is decisively the brighter choice.
At LRV 66 vs 45, RAL 840-2 is decisively the brighter choice.
RAL 840-2 reflects far more light (LRV 66 vs 31), opening up a space where Pale Green encloses it.