Abstract art is art that does not attempt to represent an accurate depiction of a visual reality but instead use shapes, colors, forms and gestural marks to achieve its effect.
Abstract Color Field painting is applied to the work of abstract painters working in the 1940s and 1960s characterized by large areas of a more or less flat single color
Hard-edge painting is painting in which abrupt transitions are found between color areas. Color areas are often of one unvarying color. The Hard-edge painting style is related to Geometric abstraction, Op Art, Post-painterly Abstraction, and Color Field painting.