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Sky Cyan

Sky Cyan

#87CEEB
HEX#87CEEB
RGB135, 206, 235
CMYK43 12 0 8
HSL197° 69% 73%
Color FamilyBlue
ChinaBluePorcelainArchitecture
Cultural Story

Sky Cyan

"After rain, the sky clears—make this color for me." This legendary quote from Emperor Huizong describes Ru kiln's Sky Cyan. Using agate in the glaze, Ru ware achieves a jade-like blue that shifts subtly with light. Only ~70 pieces survive, each priceless.

Origin

Sky Cyan originates from Ru kiln, using agate in the glaze fired in reduction atmosphere to achieve a post-rain sky blue.

Symbolism

Sky Cyan symbolizes transcendence, subtlety, and the philosophical ideal of harmony between heaven and humanity.

Historical Origin

Ru kiln Sky Cyan was created in the late Northern Song Dynasty (c. 1086-1106), ranking first among the Five Great Kilns. Production ceased after the Jin invasion, and the technique was lost.

Traditional Applications
Porcelain
Architecture
Making Process

Sky Cyan glaze is one of Chinese ceramics' greatest technical mysteries. Ru kiln artisans added agate powder to the glaze and fired in a reduction atmosphere around 1200°C. Minute changes in temperature and atmosphere created color variations, making each piece unique.

Representative Artifacts

Ru Ware Sky Cyan Washer

北宋

British Museum collection, sold for HK$294 million in 2012.

National Palace Museum Ru Ware Narcissus Planter

北宋

The only intact Ru ware piece without crackle glaze in the world.

Modern Applications

Sky Cyan inspires modern product design—from limited-edition smartphones to tea packaging and porcelain. It is a preferred background color for Chinese weddings and cultural spaces.

Color Variants
#87CEEB
#6BBDE0
#4FAAD4
#B8E3F2
#E0F4FA

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雨过天青云破处,这般颜色做将来。
—— 宋徽宗
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