Blue Ground vs RAL 660-4
Blue Ground is a Farrow & Ball color while RAL 660-4 comes from RAL Effect. Both sit in the blue family, which is useful context if you're narrowing within a single hue direction. At LRV 49 vs 31, Blue Ground will read as the brighter of the two — a 19-point gap that matters most in north-facing or low-light rooms. At ΔE 22.8, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Blue Ground vs RAL 660-4 in Real Spaces
3 real rooms side by side. Seeing Blue Ground and RAL 660-4 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. Blue Ground returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
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 Blue Ground 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 Blue Ground will make the room feel meaningfully brighter than RAL 660-4 would.
Color Details
Blue Ground vs RAL 660-4 Simulated Comparison
5 simulated room previews — drag the slider on each to see Blue Ground on one side and RAL 660-4 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 Blue Ground comparisons
See how Blue Ground stacks up against other well-photographed colors across different brands and tones.
