Realism and Impressionism revolutionized 19th-century art. Realism emerged as a reaction against Romanticism, focusing on everyday life and social issues. Artists like Courbet and Millet depicted the working class with unidealized accuracy, using muted colors and naturalistic styles. Impressionism evolved from Realism, emphasizing light, color, and atmosphere. Painters like Monet and Renoir used loose brushstrokes and vibrant hues to capture fleeting moments. Both movements rejected traditional subjects, paving the way for modern art's development.