Yves Klein is renowned for his radical exploration of pure color—most famously, his distinctive hue known as International Klein Blue (IKB), a patented pigment he developed to express immateriality and the infinite. With his iconic monochromes, Klein sought to transcend traditional representation, evoking an immersive, atmospheric experience of color as a spiritual force. His innovative practice extended beyond painting to include sculpture and provocative performance art, notably his "Anthropometries" series, in which nude models covered in IKB became "living brushes" on canvas. A largely self-taught artist born to painter parents, Klein played a pivotal role in shaping mid-20th-century art, influencing the rise of Minimalism, Conceptual art, and performance-based practices. His work is held in major international collections, including the Tate, MoMA, the Menil Collection, Moderna Museet, Fondazione Prada, and the Frederick R. Weisman Art Foundation. On the secondary market, Klein’s paintings have commanded prices reaching into the tens of millions.