Vast Lake vs Duck Green
Where Vast Lake belongs to Dulux's range, Duck Green is a Farrow & Ball color. Vast Lake reads as blue, while Duck Green reads as green-grey — two distinct hue families, not close cousins. Vast Lake (LRV 31) reflects noticeably more light than Duck Green (LRV 8), a difference of 22 points that becomes especially apparent in rooms with limited natural light. Vast Lake runs cool while Duck Green is decidedly neutral, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 36.2, 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.
Vast Lake vs Duck Green in Real Spaces
2 real rooms side by side. Seeing Vast Lake and Duck Green 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 Vast Lake will make the room feel meaningfully brighter than Duck Green would.
Front Door
A front door is a focal point — small color differences read clearly at this concentrated scale. The LRV gap is large enough that Vast Lake will make the room feel meaningfully brighter than Duck Green would.
Color Details
Vast Lake vs Duck Green Simulated Comparison
5 simulated room previews — drag the slider on each to see Vast Lake on one side and Duck Green 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 Vast Lake comparisons
See how Vast Lake stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 31, White Dove is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 31), opening up a space where Vast Lake encloses it.
With LRVs of 31 and 30, the two reflect almost the same amount of light.
Agreeable Gray reflects far more light (LRV 60 vs 31), opening up a space where Vast Lake encloses it.
At LRV 58 vs 31, Accessible Beige is decisively the brighter choice.
A 4-point LRV gap (31 vs 27) makes Vast Lake the marginally brighter of the two.
French Gray reflects far more light (LRV 43 vs 31), opening up a space where Vast Lake encloses it.
At LRV 55 vs 31, Tranquil Dawn is decisively the brighter choice.
At LRV 44 vs 31, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 31), opening up a space where Vast Lake encloses it.
At LRV 66 vs 31, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 31, Shoji White is decisively the brighter choice.
At LRV 31 vs 12, Vast Lake is decisively the brighter choice.
At LRV 68 vs 31, Skimming Stone is decisively the brighter choice.
At LRV 31 vs 12, Vast Lake is decisively the brighter choice.
At LRV 45 vs 31, Saybrook Sage is decisively the brighter choice.
With LRVs of 31 and 31, the two reflect almost the same amount of light.
Vast Lake reflects far more light (LRV 31 vs 7), opening up a space where Pine Needle encloses it.