Alan Charlton
Alan Charlton (UK, 1948) is a British conceptual artist renowned for his minimalist, monochromatic grey paintings. Since the early 1970s, he has exclusively created grey artworks, emphasizing form, texture, and spatial relationships. Charlton's consistent exploration of the color grey challenges perceptions of simplicity and depth in contemporary art.

Artwork by Ellsworth Kelly
What is Hard Edge Art?
Hard Edge art is a style of abstract painting that became popular in the 1960s. It features areas of color separated by crisp, sharp edges that are painted with geometric precision. The term hard-edge painting was coined by art critic Jules Langsner to describe this approach, which contrasts with the softer, more fluid forms of other abstract styles.