Half Sea Fog vs Tranquil Dawn
Where Half Sea Fog belongs to Behr's range, Tranquil Dawn is a Dulux color. Half Sea Fog reads as blue-grey, while Tranquil Dawn reads as green-grey — two distinct hue families, not close cousins. Tranquil Dawn (LRV 55) reflects noticeably more light than Half Sea Fog (LRV 46), a difference of 9 points that becomes especially apparent in rooms with limited natural light. Half Sea Fog runs blue while Tranquil Dawn is decidedly neutral, which means they'll respond very differently to warm vs cool light sources. The ΔE 8.8 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.
Half Sea Fog vs Tranquil Dawn in Real Spaces
3 real rooms side by side. Half Sea Fog and Tranquil Dawn 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.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Tranquil Dawn reflects noticeably more light off the walls, making the space read more open than Half Sea Fog.
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 Half Sea Fog.
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. Tranquil Dawn reflects noticeably more light off the walls, making the space read more open than Half Sea Fog.
Color Details
Half Sea Fog vs Tranquil Dawn Simulated Comparison
5 simulated room previews — drag the slider on each to see Half Sea Fog on one side and Tranquil Dawn 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 Half Sea Fog comparisons
See how Half Sea Fog stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 46), opening up a space where Half Sea Fog encloses it.
At LRV 69 vs 46, Ammonite is decisively the brighter choice.
Half Sea Fog reflects far more light (LRV 46 vs 6), opening up a space where Iron Ore encloses it.
A 6-point LRV gap (52 vs 46) makes Purbeck Stone the marginally brighter of the two.
At LRV 46 vs 30, Half Sea Fog is decisively the brighter choice.
Mizzle reads slightly lighter (LRV 52 vs 46), a gap that shows most in low-lit rooms.
At LRV 60 vs 46, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 46), opening up a space where Half Sea Fog encloses it.
Half Sea Fog reflects far more light (LRV 46 vs 27), opening up a space where Denim Drift encloses it.
Their light reflectance is nearly identical (LRV 46 vs 43), so neither reads brighter in a room.
At LRV 46 vs 4, Half Sea Fog is decisively the brighter choice.
Half Sea Fog reflects far more light (LRV 46 vs 13), opening up a space where Bancha encloses it.
With LRVs of 46 and 44, the two reflect almost the same amount of light.
At LRV 84 vs 46, Pure White is decisively the brighter choice.
At LRV 46 vs 21, Half Sea Fog is decisively the brighter choice.
Balboa Mist reflects far more light (LRV 66 vs 46), opening up a space where Half Sea Fog encloses it.
Shoji White reflects far more light (LRV 74 vs 46), opening up a space where Half Sea Fog encloses it.
Snowbound reflects far more light (LRV 83 vs 46), opening up a space where Half Sea Fog encloses it.
Half Sea Fog reflects far more light (LRV 46 vs 12), opening up a space where Pewter Green encloses it.
Skimming Stone reflects far more light (LRV 68 vs 46), opening up a space where Half Sea Fog encloses it.
A 5-point LRV gap (46 vs 41) makes Half Sea Fog the marginally brighter of the two.
At LRV 68 vs 46, Calamine is decisively the brighter choice.
At LRV 46 vs 25, Half Sea Fog is decisively the brighter choice.
Half Sea Fog reflects far more light (LRV 46 vs 12), opening up a space where Vintage Vogue encloses it.
With LRVs of 46 and 45, the two reflect almost the same amount of light.
At LRV 46 vs 31, Half Sea Fog is decisively the brighter choice.
At LRV 46 vs 7, Half Sea Fog is decisively the brighter choice.
At LRV 46 vs 24, Half Sea Fog is decisively the brighter choice.
A 12-point LRV gap (57 vs 46) makes Guilford Green the marginally brighter of the two.
At LRV 72 vs 46, Just Walnut is decisively the brighter choice.