Niebiański chalcedon
Magnat
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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 Niebiański chalcedon behaves on a wall
Magnat publishes a light reflectance value of 84.5 for this shade. At LRV 84.5 this is near the top of the scale, in off-white territory. It bounces light around a room, and it also shows every undertone in the surfaces near it — flooring and daylight will pull it warmer or cooler than the chip suggests. For trim that reads as a clear edge rather than a smudge, aim about 30 LRV points away — roughly LRV 55 and below. With 37 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.
Niebiański chalcedon equivalents in other paint brands
The closest color to Magnat Niebiański chalcedon 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.