Why did Pablo Picasso use browns grays and ochres in Analytical Cubism?

During the period of Analytical Cubism (1910–1912), Pablo Picasso and Georges Braque adopted a nearly monochromatic palette—utilizing hues such as brown, gray, ochre, cream, and green—to ensure that viewers remained focused on the structural analysis of form rather than being distracted by color.12

By limiting their color schemes, the artists were better able to present complex, multiple views of objects, which were broken down into overlapping opaque and transparent planes. This approach allowed them to emphasize the "pictorial fact" and the intrinsic structure of the composition, rather than relying on traditional illusionistic techniques like perspective or chiaroscuro to imitate nature. Ultimately, this restrained palette supported their goal of creating an independent, autonomous reality on the canvas, where meaning resided in the geometric and structural organization of the work itself.1324