Tranquil Dawn vs S 2005-Y40R
Tranquil Dawn (Dulux) and S 2005-Y40R (NCS) come from different manufacturers. Hue-wise, Tranquil Dawn belongs to the green-grey family and S 2005-Y40R to the beige-greige family. Their light reflectance values are nearly the same — 55 vs 53 — so neither will read significantly brighter or darker than the other. Where Tranquil Dawn leans neutral, S 2005-Y40R reads warm — a distinction that shifts noticeably depending on the light source and surrounding finishes. ΔE 9.0 means they're clearly different, but not dramatically so — they'd pair well in the same room. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Tranquil Dawn vs S 2005-Y40R in Real Spaces
1 real room side by side. Tranquil Dawn and S 2005-Y40R 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.
Kitchen
Kitchens often have the harshest, most revealing light in the house — under-cabinet LEDs and overhead fixtures that strip away subtlety. Tranquil Dawn reads more restrained here, while S 2005-Y40R adds a sense of enclosure and warmth.
Color Details
Tranquil Dawn vs S 2005-Y40R Simulated Comparison
5 simulated room previews — drag the slider on each to see Tranquil Dawn on one side and S 2005-Y40R 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 Tranquil Dawn comparisons
See how Tranquil Dawn stacks up against other well-photographed colors across different brands and tones.
