Blue shades

Blue shades – indoors

The semiprecious stone Lapis Lazuli [natural ultramarine blue] was for a long time the only available pure blue pigment. It was so expensive that it was used only as an art material. When at the beginning of the nineteenth century a synthetic variant of lapis lazuli [synthetic ultramarine] was produced, the use of blue increased particularly within the manufacture of wallpaper.

At the beginning of the nineteenth century it also became possible to manufacture cobalt blue and Paris blue. In 1930, the organic pigment Monastral blue was introduced. Blue linseed oil shades require more maintenance than other shades. The most stable pigment is cobalt blue. The pigment is expensive and as a consequence the paint per litre is often more expensive. However, in order not to be deterred by the price per litre, you should
consider the following. Cobalt blue paint is seldom used on facades but most often on windows and doors etc.

Supposing there are 10 windows that you want to paint. All that is required is max. one litre per three coats. If a litre of paint costs SEK 990 and you divide that by 10, the cost will be SEK 99 per window. Can you name anything else on the window that costs so little?

Ultramarine blue is sensitive to acids present in the air. This can prove problematic when the pigment partly transforms to plaster and fades. Today, we use an encapsulated ultramarine blue pigment that insulates against such acids. In addition to the blue pigment in our blue shades are also black, umbra, ochre and white. The mixture of black and white results in mild blue tones that are otherwise called “poor-man’s blue”.

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