International Klein Blue, a deep blue hue first mixed and patented by the FrenchartistYves Klein.
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International Klein Blue (or IKB as it is known in art circles) was developed by French artist Yves Klein as part of his search for colors which best represented the concepts he wished to convey as an artist.
The secret of IKB's remarkable visual impact comes from its heavy reliance on Ultramarine, as well as Klein's often thick and textured application of paint to canvas.
IKB was developed by Klein and chemists to have the same color brightness and intensity of dry pigments, which it achieves by suspending dry pigment in a clear synthetic resin.