Mark Rothko was an American painter known for his large, abstract color field paintings. He was a key figure in the Abstract Expressionism movement, which emphasized emotional expression through art. Rothko's work often features soft, rectangular blocks of color that evoke deep feelings and invite contemplation. Rothko believed that art should transcend the physical and connect with the viewer on a spiritual level. His paintings are characterized by their vibrant colors and subtle gradations, creating a sense of depth and luminosity. Rothko's influence extends beyond painting, impacting modern art and contemporary artists alike.