Lamp Black vs RAL 820-M
Where Lamp Black belongs to Little Greene's range, RAL 820-M is a RAL Effect color. These are both greys, so the question isn't which hue to choose — it's where within grey to land. RAL 820-M (LRV 29) reflects noticeably more light than Lamp Black (LRV 3), a difference of 26 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 41.7, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 5 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Lamp Black vs RAL 820-M in Real Spaces
5 real rooms side by side. Seeing Lamp Black and RAL 820-M 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
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 LRV gap is large enough that RAL 820-M will make the room feel meaningfully brighter than Lamp Black would.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. RAL 820-M reflects noticeably more light off the walls, making the space read more open than Lamp Black.
Kitchen
In a kitchen, colors are seen under bright task lighting that amplifies undertones — what reads neutral elsewhere can show its hand here. RAL 820-M reflects noticeably more light off the walls, making the space read more open than Lamp Black.
Bathroom
Bathrooms are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. RAL 820-M reflects noticeably more light off the walls, making the space read more open than Lamp Black.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. RAL 820-M reflects noticeably more light off the walls, making the space read more open than Lamp Black.
Color Details
Lamp Black vs RAL 820-M Simulated Comparison
5 simulated room previews — drag the slider on each to see Lamp Black on one side and RAL 820-M 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.
