Thimble Case vs Tranquil Dawn
Both from Dulux's palette. Hue-wise, Thimble Case belongs to the greige-grey family and Tranquil Dawn to the green-grey family. Thimble Case (LRV 68) reflects noticeably more light than Tranquil Dawn (LRV 55), a difference of 13 points that becomes especially apparent in rooms with limited natural light. Thimble Case runs warm while Tranquil Dawn is decidedly neutral, which means they'll respond very differently to warm vs cool light sources. The ΔE 8.2 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.
Thimble Case vs Tranquil Dawn in Real Spaces
3 real rooms side by side. Thimble Case 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.
Living Room
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. The LRV gap is large enough that Thimble Case will make the room feel meaningfully brighter than Tranquil Dawn would.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Thimble Case reflects noticeably more light off the walls, making the space read more open than Tranquil Dawn.
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. Thimble Case reflects noticeably more light off the walls, making the space read more open than Tranquil Dawn.
Color Details
Thimble Case vs Tranquil Dawn Simulated Comparison
5 simulated room previews — drag the slider on each to see Thimble Case 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 Thimble Case comparisons
See how Thimble Case stacks up against other well-photographed colors across different brands and tones.
With LRVs of 69 and 68, the two reflect almost the same amount of light.
At LRV 83 vs 68, White Dove is decisively the brighter choice.
At LRV 68 vs 6, Thimble Case is decisively the brighter choice.
Thimble Case reflects far more light (LRV 68 vs 52), opening up a space where Purbeck Stone encloses it.
Thimble Case reflects far more light (LRV 68 vs 30), opening up a space where Evergreen Fog encloses it.
At LRV 68 vs 52, Thimble Case is decisively the brighter choice.
Thimble Case reads slightly lighter (LRV 68 vs 60), a gap that shows most in low-lit rooms.
A 10-point LRV gap (68 vs 58) makes Thimble Case the marginally brighter of the two.
At LRV 68 vs 27, Thimble Case is decisively the brighter choice.
Thimble Case reflects far more light (LRV 68 vs 43), opening up a space where French Gray encloses it.
Thimble Case reflects far more light (LRV 68 vs 4), opening up a space where Naval encloses it.
At LRV 68 vs 13, Thimble Case is decisively the brighter choice.
At LRV 68 vs 44, Thimble Case is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 68), opening up a space where Thimble Case encloses it.
Thimble Case reflects far more light (LRV 68 vs 21), opening up a space where Artichoke encloses it.
Their light reflectance is nearly identical (LRV 68 vs 66), so neither reads brighter in a room.
A 6-point LRV gap (74 vs 68) makes Shoji White the marginally brighter of the two.
At LRV 83 vs 68, Snowbound is decisively the brighter choice.
Thimble Case reflects far more light (LRV 68 vs 51), opening up a space where Pigeon encloses it.
At LRV 68 vs 12, Thimble Case is decisively the brighter choice.
At LRV 68 vs 8, Thimble Case is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 68 vs 68), so neither reads brighter in a room.
Thimble Case reflects far more light (LRV 68 vs 41), opening up a space where Dix Blue encloses it.
At LRV 68 vs 12, Thimble Case is decisively the brighter choice.
At LRV 68 vs 45, Thimble Case is decisively the brighter choice.
Thimble Case reflects far more light (LRV 68 vs 31), opening up a space where Pale Green encloses it.
Thimble Case reflects far more light (LRV 68 vs 7), opening up a space where Pine Needle encloses it.