Morris Louis's "Saf Aleph" exemplifies Color Field painting through its use of poured acrylic on canvas, creating luminous and ethereal effects with cascading rivulets of colour.

Morris Louis (1912-1962) was an American painter and a major figure in the Color Field movement, a style related to Abstract Expressionism. He is best known for his series of "Veils" paintings, produced between 1954 and 1960, which involved pouring diluted acrylic paint onto unprimed canvas, allowing the colours to stain and merge directly into the fabric. This technique eliminated brushstrokes and created luminous, ethereal effects. Louis's work moved away from the gestural approach of earlier Abstract Expressionists, emphasising colour and form. In "Saf Aleph", the poured acrylic creates vertical rivulets of colour that cascade down the canvas. Bands of yellow, red, green, and blue blend and overlap, creating secondary hues and subtle gradations. The upper portion of the canvas is dominated by a dark, almost black area, which contrasts with the brighter colours below. The staining technique results in soft edges and a sense of transparency, as if the colours are floating on the surface. The overall effect is one of fluidity and movement, with the colours interacting in a dynamic and unpredictable way.