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.
