Vast, elemental and charged with energy, ‘California (IKB 71)’ is Yves Klein’s largest blue monochrome painting. A four-metre expanse of pure pigment, it seems to dissolve the boundary between sky and sea. Painted in France ahead of his only trip to the United States, it embodies Klein’s vision of the infinite — an invitation to lose oneself in colour, light and space. Yves Klein (1928-1962), ’California, (IKB 71)’, 1961