Korean Cobalt Blue

Cobalt Blue is China's most globally influential color. In the Yuan Dynasty, Persian cobalt met Jingdezhen porcelain clay, creating stunning blue-and-white ware that spread along the Maritime Silk Road. A Yuan Dynasty blue-and-white jar sold for ¥230 million in 2005.

Japanese indigo is celebrated as "Japan Blue." Hokusai and Hiroshige's ukiyo-e extensively used this deep blue, stunning European artists after Japan's 1853 opening. Van Gogh collected Hiroshige prints, and "The Starry Night"'s swirling blues were directly influenced by "The Great Wave off Kanagawa." The 30+ step dyeing process transforms fabric from yellow-green to deep blue through oxidation.

Swedish Blue evokes the Baltic Sea, the archipelago, and endless summer skies. The yellow cross on a blue field is said to derive from the royal coat of arms, and the color appears in Midsummer wreaths, Dala horses, and IKEA products.

Bauhaus Blue is cool and rational, joining red and yellow to form the visual grammar of modern design. From the Dessau building's glass curtain wall to Breuer's tubular steel furniture, it reminds designers that beauty comes from precise construction.

IKEA Blue and IKEA Yellow form the visual identity of the world's largest furniture retailer. Blue stands for reliability, yellow for optimism and affordability. The blue signage and yellow bags shape the modern furniture-shopping experience.

Oxford Blue symbolizes British academia and elite spirit. In 1829, the first Oxford-Cambridge boat race was held on the Thames; Oxford chose dark blue uniforms—hence "Oxford Blue." Cambridge Blue is lighter and brighter. Oxford Blue permeates British culture—Oxford University Press logo, Conservative Party colors, and British trench coat linings.