Half the world, in turquoise
Isfahan
Safavid mosques around a vast square are covered inside and out with turquoise and deep blue tiles.

Why Isfahan is persian turquoise
Isfahan became the capital of Safavid Persia in 1598 under Shah Abbas I. A Persian saying calls it half the world. Its centre is Naqsh-e Jahan Square, one of the largest city squares anywhere. On the south side stands the Shah Mosque, built in the early 17th century, with a turquoise dome and walls of tile in blue, turquoise, yellow, white and black. To finish it faster, builders used haft-rangi tiles, on which seven colours are painted on one square and fired together. The smaller Sheikh Lotfollah Mosque has a cream dome that seems to change tint through the day. The blue is often read as the sky brought down to earth.
Values are fair approximations of what the eye sees there, not measurements.
Colours tied to Isfahan
Written by the Rang desk with AI assistance. Background: "Isfahan" on Wikipedia. If you know Isfahan and we have it wrong, tell us.
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The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.
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