Onyx vs RAL 250-M
Where Onyx belongs to Benjamin Moore's range, RAL 250-M is a RAL Effect color. Onyx reads as grey, while RAL 250-M reads as beige-yellow — two distinct hue families, not close cousins. RAL 250-M (LRV 34) reflects noticeably more light than Onyx (LRV 5), a difference of 29 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 71.8, 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.
Onyx vs RAL 250-M in Real Spaces
5 real rooms side by side. Seeing Onyx and RAL 250-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 250-M will make the room feel meaningfully brighter than Onyx 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 250-M reflects noticeably more light off the walls, making the space read more open than Onyx.
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 250-M reflects noticeably more light off the walls, making the space read more open than Onyx.
House
Seen across an entire facade, subtle tonal differences become pronounced. What reads as nearly the same on a chip often reads as clearly different at scale. RAL 250-M reflects noticeably more light off the walls, making the space read more open than Onyx.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. RAL 250-M reflects noticeably more light off the walls, making the space read more open than Onyx.
Color Details
Onyx vs RAL 250-M Simulated Comparison
5 simulated room previews — drag the slider on each to see Onyx on one side and RAL 250-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 Onyx comparisons
See how Onyx stacks up against other well-photographed colors across different brands and tones.
