Dock Blue vs RAL 820-6
Where Dock Blue belongs to Little Greene's range, RAL 820-6 is a RAL Effect color. Hue-wise, Dock Blue belongs to the blue family and RAL 820-6 to the blue-grey family. RAL 820-6 (LRV 7) reflects noticeably more light than Dock Blue (LRV 4), a difference of 3 points that becomes especially apparent in rooms with limited natural light. The ΔE 8.6 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Dock Blue vs RAL 820-6 in Real Spaces
3 real rooms side by side. Dock Blue and RAL 820-6 are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
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 brightness difference is modest but present — RAL 820-6 gives the walls a little more lift.
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 820-6 reads slightly lighter here — a subtle but real difference in how open the space feels.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. RAL 820-6 reads slightly lighter here — a subtle but real difference in how open the space feels.
Color Details
Dock Blue vs RAL 820-6 Simulated Comparison
5 simulated room previews — drag the slider on each to see Dock Blue on one side and RAL 820-6 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 Dock Blue comparisons
See how Dock Blue stacks up against other well-photographed colors across different brands and tones.
