Slate Blue vs Tranquil Dawn
Where Slate Blue belongs to Benjamin Moore's range, Tranquil Dawn is a Dulux color. Slate Blue reads as blue, while Tranquil Dawn reads as green-grey — two distinct hue families, not close cousins. Tranquil Dawn (LRV 55) reflects noticeably more light than Slate Blue (LRV 43), a difference of 12 points that becomes especially apparent in rooms with limited natural light. Slate Blue runs blue while Tranquil Dawn is decidedly neutral, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 14.0, 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.
Slate Blue vs Tranquil Dawn in Real Spaces
1 real room side by side. Seeing Slate Blue 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.
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 Slate Blue.
Color Details
Slate Blue vs Tranquil Dawn Simulated Comparison
5 simulated room previews — drag the slider on each to see Slate Blue 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 Slate Blue comparisons
See how Slate Blue stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 43), opening up a space where Slate Blue encloses it.
At LRV 69 vs 43, Ammonite is decisively the brighter choice.
Slate Blue reflects far more light (LRV 43 vs 6), opening up a space where Iron Ore encloses it.
A 9-point LRV gap (52 vs 43) makes Purbeck Stone the marginally brighter of the two.
At LRV 43 vs 30, Slate Blue is decisively the brighter choice.
Mizzle reads slightly lighter (LRV 52 vs 43), a gap that shows most in low-lit rooms.
At LRV 60 vs 43, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 43), opening up a space where Slate Blue encloses it.
Slate Blue reflects far more light (LRV 43 vs 27), opening up a space where Denim Drift encloses it.
Their light reflectance is nearly identical (LRV 43 vs 43), so neither reads brighter in a room.
At LRV 43 vs 4, Slate Blue is decisively the brighter choice.
Slate Blue reflects far more light (LRV 43 vs 13), opening up a space where Bancha encloses it.
With LRVs of 44 and 43, the two reflect almost the same amount of light.
At LRV 84 vs 43, Pure White is decisively the brighter choice.
At LRV 43 vs 21, Slate Blue is decisively the brighter choice.
Balboa Mist reflects far more light (LRV 66 vs 43), opening up a space where Slate Blue encloses it.
Shoji White reflects far more light (LRV 74 vs 43), opening up a space where Slate Blue encloses it.
Snowbound reflects far more light (LRV 83 vs 43), opening up a space where Slate Blue encloses it.
Slate Blue reflects far more light (LRV 43 vs 12), opening up a space where Pewter Green encloses it.
Skimming Stone reflects far more light (LRV 68 vs 43), opening up a space where Slate Blue encloses it.
Their light reflectance is nearly identical (LRV 43 vs 41), so neither reads brighter in a room.
At LRV 68 vs 43, Calamine is decisively the brighter choice.
At LRV 43 vs 25, Slate Blue is decisively the brighter choice.
Slate Blue reflects far more light (LRV 43 vs 12), opening up a space where Vintage Vogue encloses it.
With LRVs of 45 and 43, the two reflect almost the same amount of light.
A 12-point LRV gap (43 vs 31) makes Slate Blue the marginally brighter of the two.
At LRV 43 vs 7, Slate Blue is decisively the brighter choice.
At LRV 43 vs 24, Slate Blue is decisively the brighter choice.
At LRV 57 vs 43, Guilford Green is decisively the brighter choice.
At LRV 72 vs 43, Just Walnut is decisively the brighter choice.