"RP7 La Terre Bleue" is a sculptural relief by Yves Klein that employs his signature International Klein Blue (IKB) pigment mixed with synthetic resin, applied to plaster molding to create a monochromatic blue composition. The work exemplifies Klein's obsession with pure color as a means of spiritual and sensory experience, transforming the material surface into an immersive chromatic field. The title references Earth, suggesting Klein's interest in elevating the mundane or natural world through his distinctive chromatic treatment and conceptual approach to abstraction.