Tranquil Dawn vs RAL 640-M
Where Tranquil Dawn belongs to Dulux's range, RAL 640-M is a RAL Effect color. Hue-wise, Tranquil Dawn belongs to the green-grey family and RAL 640-M to the blue family. Tranquil Dawn (LRV 55) reflects noticeably more light than RAL 640-M (LRV 5), a difference of 50 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 62.4, 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 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Tranquil Dawn vs RAL 640-M in Real Spaces
3 real rooms side by side. Seeing Tranquil Dawn and RAL 640-M in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
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 RAL 640-M.
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 RAL 640-M.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. Tranquil Dawn reflects noticeably more light off the walls, making the space read more open than RAL 640-M.
Color Details
Tranquil Dawn vs RAL 640-M Simulated Comparison
5 simulated room previews — drag the slider on each to see Tranquil Dawn on one side and RAL 640-M 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.
