Sulfur Yellow

Sulfur Yellow is named after the natural sulfur crystals deposited around volcanic fumaroles. The sulfur deposits in Mount Etna in Sicily and the geothermal areas of Iceland show a piercing bright yellow under the sun. The ancient Roman naturalist Pliny the Elder, in his 'Natural History,' recorded Sulfur Yellow as 'the color of the volcano's anger,' as it was often accompanied by sulfurous fumes and geothermal eruptions.

Medieval alchemists regarded Sulfur Yellow as one of the most important operational colors. In alchemy, sulfur represented the masculine principle and the element of fire. Sulfur Yellow was used to depict the salamander and the phoenix in alchemical manuscripts. Carl Jung later reinterpreted these color symbols in analytical psychology, viewing Sulfur Yellow as a catalyst for the individuation process.

The 19th-century Industrial Revolution used Sulfur Yellow in match manufacturing. The match factory in Jönköping, Sweden, dyed match heads with Sulfur Yellow. Workers toiled daily in Sulfur Yellow dust, and the occupational disease permanently stained their skin and nails a pale yellow. Sulfur Yellow is thus also a silent witness to the cruelty of the Industrial Revolution.

In the mid-20th century, Sulfur Yellow was chosen as one of the colors for the International Atomic Energy Agency's radiation warning sign. In nuclear facilities, Sulfur Yellow warning signs alert workers to the presence of radioactive materials. A color once associated with volcanoes and alchemy became, in the atomic age, a visual symbol of modern technological risk.

Contemporary artist Olafur Eliasson, in his 'The Weather Project' installation at Tate Modern in London, used Sulfur Yellow sodium lamps to create an indoor sun. The audience lay on the floor for long periods, unwilling to leave the intense Sulfur Yellow light, as if collectively returning to some primitive form of worship.