RAL 660-4 vs Agreeable Gray
RAL 660-4 is a RAL Effect color while Agreeable Gray comes from Sherwin-Williams. Hue-wise, RAL 660-4 belongs to the blue family and Agreeable Gray to the greige-grey family. At LRV 60 vs 31, Agreeable Gray will read as the brighter of the two — a 30-point gap that matters most in north-facing or low-light rooms. At ΔE 39.6, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 6 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
RAL 660-4 vs Agreeable Gray in Real Spaces
6 real rooms side by side. Seeing RAL 660-4 and Agreeable Gray in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
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. Agreeable Gray returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Bedroom
Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. The LRV gap is large enough that Agreeable Gray will make the room feel meaningfully brighter than RAL 660-4 would.
Kitchen
Kitchen lighting tends to be bright and directional, which sharpens contrast and makes undertone differences more apparent. The LRV gap is large enough that Agreeable Gray will make the room feel meaningfully brighter than RAL 660-4 would.
Bathroom
Bathrooms amplify color — the enclosed space and reflective surfaces make what reads subtle elsewhere feel more present here. The LRV gap is large enough that Agreeable Gray will make the room feel meaningfully brighter than RAL 660-4 would.
House
At full exterior scale, the difference between these two colors becomes much easier to judge than from a small chip. The LRV gap is large enough that Agreeable Gray will make the room feel meaningfully brighter than RAL 660-4 would.
Kitchen Cabinets
On cabinetry, undertone and temperature become more pronounced against countertops and hardware. The LRV gap is large enough that Agreeable Gray will make the room feel meaningfully brighter than RAL 660-4 would.
Color Details
RAL 660-4 vs Agreeable Gray Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 660-4 on one side and Agreeable Gray 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 660-4 comparisons
See how RAL 660-4 stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 31, White Dove is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 31), opening up a space where RAL 660-4 encloses it.
With LRVs of 31 and 30, the two reflect almost the same amount of light.
At LRV 58 vs 31, Accessible Beige is decisively the brighter choice.
A 4-point LRV gap (31 vs 27) makes RAL 660-4 the marginally brighter of the two.
French Gray reflects far more light (LRV 43 vs 31), opening up a space where RAL 660-4 encloses it.
At LRV 55 vs 31, Tranquil Dawn is decisively the brighter choice.
At LRV 44 vs 31, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 31), opening up a space where RAL 660-4 encloses it.
At LRV 66 vs 31, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 31, Shoji White is decisively the brighter choice.
At LRV 31 vs 12, RAL 660-4 is decisively the brighter choice.
At LRV 31 vs 8, RAL 660-4 is decisively the brighter choice.
At LRV 68 vs 31, Skimming Stone is decisively the brighter choice.
At LRV 31 vs 12, RAL 660-4 is decisively the brighter choice.
At LRV 45 vs 31, Saybrook Sage is decisively the brighter choice.
With LRVs of 31 and 31, the two reflect almost the same amount of light.
RAL 660-4 reflects far more light (LRV 31 vs 7), opening up a space where Pine Needle encloses it.