Lamp Black vs RAL 620-4
Lamp Black is a Little Greene color while RAL 620-4 comes from RAL Effect. Hue-wise, Lamp Black belongs to the grey family and RAL 620-4 to the blue family. At LRV 9 vs 3, RAL 620-4 will read as the brighter of the two — a 6-point gap that matters most in north-facing or low-light rooms. At ΔE 23.0, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 4 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Lamp Black vs RAL 620-4 in Real Spaces
4 real rooms side by side. Seeing Lamp Black and RAL 620-4 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. RAL 620-4 has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Bedroom
Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. The brightness difference is modest but present — RAL 620-4 gives the walls a little more lift.
Kitchen
Kitchen lighting tends to be bright and directional, which sharpens contrast and makes undertone differences more apparent. The brightness difference is modest but present — RAL 620-4 gives the walls a little more lift.
Kitchen Cabinets
On cabinetry, undertone and temperature become more pronounced against countertops and hardware. The brightness difference is modest but present — RAL 620-4 gives the walls a little more lift.
Color Details
Lamp Black vs RAL 620-4 Simulated Comparison
5 simulated room previews — drag the slider on each to see Lamp Black on one side and RAL 620-4 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 Lamp Black comparisons
See how Lamp Black stacks up against other well-photographed colors across different brands and tones.
