Wythe Blue vs RAL 630-4
Wythe Blue (Benjamin Moore) and RAL 630-4 (RAL Effect) come from different manufacturers. Wythe Blue reads as blue-green, while RAL 630-4 reads as blue — two distinct hue families, not close cousins. The 42-point LRV gap — 48 for Wythe Blue vs 6 for RAL 630-4 — means Wythe Blue will open up a space more effectively. A ΔE of 52.8 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 5 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Wythe Blue vs RAL 630-4 in Real Spaces
5 real rooms side by side. Seeing Wythe Blue and RAL 630-4 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
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. Wythe Blue reflects noticeably more light off the walls, making the space read more open than RAL 630-4.
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. Wythe Blue 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. Wythe Blue 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. Wythe Blue 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. Wythe Blue returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Wythe Blue vs RAL 630-4 Simulated Comparison
5 simulated room previews — drag the slider on each to see Wythe Blue on one side and RAL 630-4 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 Wythe Blue comparisons
See how Wythe Blue stacks up against other well-photographed colors across different brands and tones.


















































