Born in Aberdeen, Washington, Robert Motherwell studied at Stanford University and Harvard University before moving to New York City in the early 1940s. He became a central figure in the development of Abstract Expressionism, associating with artists such as Jackson Pollock, Willem de Kooning, and Mark Rothko, and played a significant role in documenting the movement through his editorial work.

His practice was characterized by a synthesis of European modernism and American spontaneity, often utilizing bold, gestural brushwork and a restricted palette. He is widely recognized for his long-running Elegy to the Spanish Republic series, which explored themes of political tragedy and existential struggle through recurring black ovoid and vertical bar motifs.

Motherwell's legacy continues to be examined in major institutional contexts, including recent collection re-evaluations at the Stedelijk Museum Amsterdam. His work remains a cornerstone of mid-century American abstraction, frequently cited in discussions regarding the evolution of the New York School and its global influence.