Color Field painting is an abstract style that emerged in the 1950s after Abstract Expressionism and is largely characterized by abstract canvases painted primarily with large areas of solid color. Color Field painting initially referred to a particular type of abstract expressionism. Art critic Clement Greenberg perceived Color Field painting as related to but different from Action painting. During the early to mid-1960s Color Field painting was the term used to describe artists whose works were related to second generation abstract expressionism and to younger artists who were moving in a new direction. In 1964 Clement Greenberg curated an influential exhibition that traveled the country called Post-painterly abstraction. The exhibition expanded the definition of color field painting. Color Field painting clearly pointed toward a new direction in American painting, away from abstract expressionism. Color Field painting is related to Post-painterly abstraction.