. "300386619" . "2013-11-21T10:53:40"^^ . . "2013-07-01T15:13:49"^^ . "IKB"@en . "International Klein Blue (IKB) is a powdery ultramarine pigment created by Yves Klein in 1956 and patented by the artist in 1960. He used the color, symbolic of purity of spirit, exclusively from 1957 on."@en . . "International Klein Blue"@en .