RAL 140-6 vs Believable Buff
Where RAL 140-6 belongs to RAL Effect's range, Believable Buff is a Sherwin-Williams color. These are both beiges, so the question isn't which hue to choose — it's where within beige to land. RAL 140-6 (LRV 66) reflects noticeably more light than Believable Buff (LRV 59), a difference of 7 points that becomes especially apparent in rooms with limited natural light. The ΔE 4.3 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
RAL 140-6 vs Believable Buff in Real Spaces
1 real room side by side. RAL 140-6 and Believable Buff 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 brightness difference is modest but present — RAL 140-6 gives the walls a little more lift.
Color Details
RAL 140-6 vs Believable Buff Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 140-6 on one side and Believable Buff 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 140-6 comparisons
See how RAL 140-6 stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 66), opening up a space where RAL 140-6 encloses it.
At LRV 66 vs 52, RAL 140-6 is decisively the brighter choice.
At LRV 66 vs 30, RAL 140-6 is decisively the brighter choice.
A 6-point LRV gap (66 vs 60) makes RAL 140-6 the marginally brighter of the two.
RAL 140-6 reads slightly lighter (LRV 66 vs 58), a gap that shows most in low-lit rooms.
RAL 140-6 reflects far more light (LRV 66 vs 27), opening up a space where Denim Drift encloses it.
At LRV 66 vs 43, RAL 140-6 is decisively the brighter choice.
RAL 140-6 reads slightly lighter (LRV 66 vs 55), a gap that shows most in low-lit rooms.
RAL 140-6 reflects far more light (LRV 66 vs 44), opening up a space where Hardwick White encloses it.
At LRV 84 vs 66, Pure White is decisively the brighter choice.
With LRVs of 66 and 66, the two reflect almost the same amount of light.
Shoji White reads slightly lighter (LRV 74 vs 66), a gap that shows most in low-lit rooms.
RAL 140-6 reflects far more light (LRV 66 vs 12), opening up a space where Pewter Green encloses it.
RAL 140-6 reflects far more light (LRV 66 vs 8), opening up a space where Duck Green encloses it.
With LRVs of 68 and 66, the two reflect almost the same amount of light.
RAL 140-6 reflects far more light (LRV 66 vs 12), opening up a space where Vintage Vogue encloses it.
RAL 140-6 reflects far more light (LRV 66 vs 45), opening up a space where Saybrook Sage encloses it.
At LRV 66 vs 31, RAL 140-6 is decisively the brighter choice.