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How did Georges Seurat use pointillism to create luminous color?

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Georges Seurat developed pointillism by applying small, systematic dots of pure color side by side on the canvas. Rather than physically mixing pigments on a palette, Seurat relied on the viewer's eye to optically blend these distinct points of color from a distance.12

This technique, also known as divisionism, creates a sense of luminosity because the contrasting dots of color merge in the viewer's perception to form a vibrant, unified whole. By utilizing this method, Seurat moved beyond the fleeting, spontaneous approach of Impressionism to create works that felt transformed into a state of timelessness, as seen in his major paintings like A Sunday on La Grande Jatte—1884 and Bathers at Asnières.31