Yves Klein was a revolutionary French artist and leading figure in the avant-garde movements of the postwar era. Born in Nice, France, Klein was a highly creative visionary whose bold and innovative artistic philosophy impacted multiple mediums. Best known for his trademark ultramarine blue hue, Klein viewed the pure color as an open dimension into which to pursue radical artistic possibilities. In his famed anthropometry paintings, he used nude female models as "living brushes" to apply blue pigment in imprints across canvases, pushing traditional artistic boundaries. Other pivotal works included his Furniture Sculptures composed of household objects saturated in his iconic International Klein Blue pigment. Klein's creativity transcended conventional creative disciplines. His performance-based works merged painting, sculpture, dance, music, and theater into unified conceptual "Architecture of Air" installations. Infamous pieces like Zone of Immaterial Pictorial Sensibility sold "nothing" to collectors for exorbitant fees in exchange for written documentation and pure experiences. A passionate showman, Klein orchestrated provocative events that captured the ephemeral and effervescent nature of his holistic philosophy. He released hundreds of blue balloons into the sky, created fiery paintings using blasts of natural fire, and patented a technique to preserve the natural footprints of his models in gold leaf as artworks. Though his intense career spanned just seven years before his untimely death at 34, Klein's radical concepts, use of naked models, and groundbreaking ideas about art's metaphysical potential cemented his legacy as a trailblazer. His art remains celebrated for its daring vision and deeply spiritual approach to color, the immaterial, and the power of conceptual gestures.