Herbert Aach, also known as Herb Aach, was an American writer and artist, whose painting style, dubbed Color Expressionism, was known for its intense and well-placed pigmentation. He was deeply interested in color theory and color relationships.
Featured image: Herbert Aach - Split Infinity #B6S, 1980 (detail). Serigraph. 42 × 30 in. 106.7 × 76.2 cm. Edition of 200. This is part of a limited edition set. Photo courtesy RoGallery