Undine vs Tranquil Dawn
Undine (Behr) and Tranquil Dawn (Dulux) come from different manufacturers. Hue-wise, Undine belongs to the blue family and Tranquil Dawn to the green-grey family. The 12-point LRV gap — 55 for Tranquil Dawn vs 43 for Undine — means Tranquil Dawn will open up a space more effectively. Where Undine leans green and blue, Tranquil Dawn reads neutral — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 17.5 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 5 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Undine vs Tranquil Dawn in Real Spaces
5 real rooms side by side. Seeing Undine and Tranquil Dawn 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
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. Tranquil Dawn reflects noticeably more light off the walls, making the space read more open than Undine.
Bedroom
Bedrooms are typically lit with warmer, lower light than the rest of the house — a condition that flatters warm tones and deepens cool ones. Tranquil Dawn returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Kitchen
Kitchens often have the harshest, most revealing light in the house — under-cabinet LEDs and overhead fixtures that strip away subtlety. Tranquil Dawn returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Bathroom
Small bathrooms intensify color. A shade that seems quiet in a larger room can feel immersive when you're surrounded by it on four walls. Tranquil Dawn returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Kitchen Cabinets
Cabinet color is always seen in context — against countertops, backsplash, and hardware — which amplifies undertone differences that might disappear on a plain wall. Tranquil Dawn returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Undine vs Tranquil Dawn Simulated Comparison
5 simulated room previews — drag the slider on each to see Undine 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 Undine comparisons
See how Undine stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 43, White Dove is decisively the brighter choice.
Purbeck Stone reads slightly lighter (LRV 52 vs 43), a gap that shows most in low-lit rooms.
Undine reflects far more light (LRV 43 vs 30), opening up a space where Evergreen Fog encloses it.
Agreeable Gray reflects far more light (LRV 60 vs 43), opening up a space where Undine encloses it.
At LRV 58 vs 43, Accessible Beige is decisively the brighter choice.
At LRV 43 vs 27, Undine is decisively the brighter choice.
With LRVs of 43 and 43, the two reflect almost the same amount of light.
Their light reflectance is nearly identical (LRV 44 vs 43), so neither reads brighter in a room.
Pure White reflects far more light (LRV 84 vs 43), opening up a space where Undine encloses it.
At LRV 66 vs 43, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 43, Shoji White is decisively the brighter choice.
At LRV 43 vs 12, Undine is decisively the brighter choice.
At LRV 68 vs 43, Skimming Stone is decisively the brighter choice.
At LRV 43 vs 12, Undine is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 45 vs 43), so neither reads brighter in a room.
Undine reads slightly lighter (LRV 43 vs 31), a gap that shows most in low-lit rooms.
Undine reflects far more light (LRV 43 vs 7), opening up a space where Pine Needle encloses it.
Undine reflects far more light (LRV 43 vs 24), opening up a space where Cement grey encloses it.
Guilford Green reflects far more light (LRV 57 vs 43), opening up a space where Undine encloses it.
Just Walnut reflects far more light (LRV 72 vs 43), opening up a space where Undine encloses it.