Błękit pruski

Prussian blue, Berlin blue, Paris blue or Parisian blue; deep blue pigment discovered in the late 17th century and first used as a fabric dye in 1749. It was produced from a mixture of dried ox blood and potash to which iron filings and soda compounds were added and roasted at high temperatures, followed by the addition of alum and iron sulphate. It was used for dying fabric and in paint production.

 See also: B Popiołek, Z poczucia piękna, z potrzeby posiadania. Kobiecy świat rzeczy w osiemnastowiecznej Rzeczypospolitej,Warsaw 2024.