Tranquil Dawn vs Portico
Where Tranquil Dawn belongs to Dulux's range, Portico is a Sherwin-Williams color. Hue-wise, Tranquil Dawn belongs to the green-grey family and Portico to the beige-greige family. Tranquil Dawn (LRV 55) reflects noticeably more light than Portico (LRV 42), a difference of 13 points that becomes especially apparent in rooms with limited natural light. Tranquil Dawn runs neutral while Portico is decidedly warm, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 13.2, 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 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Tranquil Dawn vs Portico in Real Spaces
1 real room side by side. Seeing Tranquil Dawn and Portico in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Kitchen
In a kitchen, colors are seen under bright task lighting that amplifies undertones — what reads neutral elsewhere can show its hand here. Tranquil Dawn reflects noticeably more light off the walls, making the space read more open than Portico.
Color Details
Tranquil Dawn vs Portico Simulated Comparison
5 simulated room previews — drag the slider on each to see Tranquil Dawn on one side and Portico 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.
