Charcoal Slate vs RAL 340-M
Charcoal Slate (Benjamin Moore) and RAL 340-M (RAL Effect) come from different manufacturers. Hue-wise, Charcoal Slate belongs to the grey family and RAL 340-M to the pink family. The 9-point LRV gap — 15 for Charcoal Slate vs 6 for RAL 340-M — means Charcoal Slate will open up a space more effectively. A ΔE of 23.4 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 6 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Charcoal Slate vs RAL 340-M in Real Spaces
6 real rooms side by side. Seeing Charcoal Slate and RAL 340-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
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. Charcoal Slate reflects noticeably more light off the walls, making the space read more open than RAL 340-M.
Bedroom
Bedrooms are typically lit with warmer, lower light than the rest of the house — a condition that flatters warm tones and deepens cool ones. Charcoal Slate returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Kitchen
Kitchens often have the harshest, most revealing light in the house — under-cabinet LEDs and overhead fixtures that strip away subtlety. Charcoal Slate returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Bathroom
Small bathrooms intensify color. A shade that seems quiet in a larger room can feel immersive when you're surrounded by it on four walls. Charcoal Slate returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
House
A full exterior is the most demanding test for a paint color — scale and outdoor light both amplify differences that seem small on a swatch. Charcoal Slate returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Kitchen Cabinets
Cabinet color is always seen in context — against countertops, backsplash, and hardware — which amplifies undertone differences that might disappear on a plain wall. Charcoal Slate returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Charcoal Slate vs RAL 340-M Simulated Comparison
5 simulated room previews — drag the slider on each to see Charcoal Slate on one side and RAL 340-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 Charcoal Slate comparisons
See how Charcoal Slate stacks up against other well-photographed colors across different brands and tones.
