The influential artist known for their vibrant use of color and abstract forms is Henri Matisse. A leading figure in modern art, Matisse's work is characterized by bold colors and an innovative approach to composition. He is best known for his contributions to the Fauvism movement, where he broke traditional boundaries of color usage to express emotion and movement. His masterpieces, such as "The Dance" and "Woman with a Hat," have left an indelible mark on the art world, influencing countless artists and movements.