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In 1742, Swedish chemist Georg Brandt showed that the blue color was due to a previously unidentified metal, cobalt. The first recorded use of cobalt blue as a color name in English was in 1777. [2] It was independently discovered as an alumina-based pigment by Louis Jacques Thénard in 1802. [3] Commercial production began in France in 1807.
A color chart or color reference card is a flat, physical object that has many different color samples present. They can be available as a single-page chart, or in the form of swatchbooks or color-matching fans. Typically there are two different types of color charts: Color reference charts are intended
8–10 Al 6 Si 6 O 24 S 2–4 (generalized formula) Persian blue: made by grinding up the mineral Lapis lazuli. The most important mineral component of lapis lazuli is lazurite (25% to 40%), a feldspathoid silicate mineral with the formula (Na,Ca) 8 (AlSiO 4) 6 (S,SO 4,Cl) 1–2. Cobalt pigments. Cobalt blue (PB28): cobalt(II) aluminate.
Minus-blue 1 + 1 / 3 Minus-blue filter; complements #32 minus-green and #44A minus-red. Used with Ektachrome or Aerochrome Infrared films to obtain false-color results. Used in ophthalmology and optometry in conjunction with a slit-lamp and a cobalt blue light to improve contrast when assessing the health of the cornea and the fit of ...
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Cobalt blue: Deutsche Bundesbahn express locomotives and first class cars 1962–1971 RAL 5014: Pigeon blue: RAL 5015: Sky blue: Colour used for TfL Cycle Superhighways; [6] colour of the University of Barcelona and VU Amsterdam, original colour of FMŻ Bizon Z058 Rekord since the year 1999, main colour of the Helsinki Regional Transport ...
Cosmic Cobalt may be our 2025 Color of the Year, but this rich blue hue has long been a color of significance for royalty and ancient cultures, dating as far back as the 6th and 7th centuries B.C.
From neutrals to metallics, these expert-approved hues are perfect matches for our 2025 Color of the Year. Here, the best colors to pair with cobalt blue.