Scala 75.15.21 (RAL 6033)
Brillux
Try 75.15.21 on your wall
Take a photo of the room. Muro puts this color on the walls in the light the room actually has.
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How Scala 75.15.21 (RAL 6033) behaves on a wall
Brillux publishes a light reflectance value of 22.5 for this shade. At LRV 22.5 this is a dark shade. It absorbs far more light than it gives back, which reads as depth in a bright room and as gloom in a north-facing one. Expect to prime if you are covering something much lighter. For trim that reads as a clear edge rather than a smudge, aim about 30 LRV points away — roughly LRV 53 and up. With 60 points between its strongest and weakest channel it holds a readable blue cast, so it will not flatten into a neutral once it is on four walls. Order by the code, not the name, and put a test patch on the wall before you commit — a screen cannot show you how this shade behaves in your own light.
Scala 75.15.21 (RAL 6033) equivalents in other paint brands
The closest color to Brillux Scala 75.15.21 (RAL 6033) from each brand we carry, measured with CIEDE2000 on the manufacturers' published color values. Below 1 the difference is practically invisible; below 2 you'd only notice it with the chips side by side. Screens and printed chips aren't paint, so compare real samples before you buy. In the Muro app you can put two of them on a photo of your own wall and look at them in your light.