Dix Blue vs RAL 620-5
Where Dix Blue belongs to Farrow & Ball's range, RAL 620-5 is a RAL Effect color. Hue-wise, Dix Blue belongs to the blue-grey family and RAL 620-5 to the blue family. Dix Blue (LRV 41) reflects noticeably more light than RAL 620-5 (LRV 4), a difference of 37 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 52.3, 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 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Dix Blue vs RAL 620-5 in Real Spaces
2 real rooms side by side. Seeing Dix Blue and RAL 620-5 in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
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. Dix Blue reflects noticeably more light off the walls, making the space read more open than RAL 620-5.
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. Dix Blue reflects noticeably more light off the walls, making the space read more open than RAL 620-5.
Color Details
Dix Blue vs RAL 620-5 Simulated Comparison
5 simulated room previews — drag the slider on each to see Dix Blue on one side and RAL 620-5 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 Dix Blue comparisons
See how Dix Blue stacks up against other well-photographed colors across different brands and tones.
