国际克莱因蓝（IKB）由法国艺术家伊夫·克莱因与化学家合作创造，具有强烈的视觉冲击力和独特的哑光质感。克莱因用它表达乌托邦式的和谐感，使其在战后艺术界声名大噪。但你知道吗？复刻这一抹蓝色却花了十年时间。
Ultramarine blue is a very special pigment.
Prior to the 19th century, it was as expensive as gold.
If you look at old master paintings, they always saved this ultramarine blue for the Holy Mother's robes.
Historically, we ascribed so much value to this color and Yves Klein has something to do with that too.
He started the French mad scientist of post-war art.
He's an artist who is so self-aggrandising that he will name a color after himself.
Klein worked with a chemist to create International Klein Blue.
The color is an old term marine, but he created a formula for the paint so that it wouldn't lose its vibrancy and its shine.
Klein was trying to create a certain harmony, almost a utopian effect.
That was so extraordinary that it made him famous.
