What movement radically simplified the language of abstract painting to color and a limited set of forms?

The movement that radically simplified the language of abstract painting to color and a limited set of forms is Color Field painting, which emerged in the mid-20th century. Artists associated with this movement, such as Mark Rothko and Barnett Newman, focused on large areas of solid color and simplified shapes to evoke emotional responses. This approach aimed to strip away representational elements, emphasizing color as the primary means of expression. Color Field painting played a crucial role in the development of modern art, influencing subsequent movements and artists.