The Atlas Obscura Podcast The Blue That Upended the Art World
Mar 19, 2026
Kassia St. Clair, cultural historian and author of The Secret Lives of Color, traces how ultramarine and mauve reshaped art and fashion. She tells the globe-spanning story of expensive lapis-based blue and the accidental chemical birth of mauve. Short, vivid tales link trade routes, patrons, chemistry, and shifting tastes.
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Ultramarine Is The Apex Of Blues
- Ultramarine is a deep, vibrant blue distinct from green or purple leanings.
- Kassia places it at the apex of blues: pure, vivid, and historically prized as 'beyond the sea' because it came from far away.
Ultramarine Traveled The Silk Road And Required Labor
- Lapis lazuli from Sar Isang traveled via Silk Road routes and became ultramarine pigment after intense processing.
- Processing required grinding and purifying the stone to extract the pure blue powder used in art.
Religious Taste Elevated Ultramarine
- Blue rose in prominence in 12th–13th century Europe alongside the cult of the Virgin Mary.
- Ultramarine became the preferred pigment for depictions of Mary, elevating its symbolic and monetary value.
