Cobalt Blue: Cobalt blue surfaced

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Cobalt Blue: Cobalt blue surfaced in the 8th and 9th centuries. You’d see this hue on jewelry, ceramics, and porcelain. It became a cheaper alternative after French chemist Louis Jacques Thénard discovered it in 1802. Mass production of cobalt blue only started in 1807, and painters like J. M. W. Turner, Pierre-Auguste Renoir, and Vincent Van Gogh used it in their paint. If you look at Van Gogh’s Starry Night, cobalt blue surrounds the moon on the far right side.
Cerulean: Priorly known as coeruleum, cerulean was perfected by a German chemist, Andreas Höpfner, in 1805 by roasting cobalt blue with tin oxides. Berthe Morisot, a French painter, used cerulean alongside ultramarine and cobalt blue in his painting, Summer’s Day. Also, by 1999, Pantone declared Cerulean as the hue of the future and millennium.
Indigo: Indigo comes from a plant called Indigofera tinctoria. Despite the rarity and expensiveness of blue as paint, it was great for textiles. By the 16th century, indigo became a widespread good for trading and ivory coast telegram incited trade wars between Europe and America. Now, it’s used to color denim and has an eco-friendly substitute, “bio-indigo.” Sir Isaac Newton also defended the existence of indigo—and orange—to his fellow scientists as part of the color spectrum.
Navy Blue: It’s the darkest shade of blue. As the name suggests, its first use was by the British Royal Navy in 1748. Officers and sailors used this color to show a unified front and geographic protection stations (air, land, and sea).
Prussian Blue: Our third to the last blue came from an accident by German dye-maker Johann Jacob Diesbach. He added animal blood to the potash to make it redder, but the outcome was a vibrant blue. It was used by artists like Pablo Picasso in his Blue Period and by Katsushika Hokusai in his Great Wave off Kanagawa and other pieces. Also, thanks to Sir John Herschel, an English astronomer, who discovered that Prussian blue was sensitive to light, it’s great to use for drawings and blueprints.