In the art and design literature, raw umber is celebrated as a versatile, earthy pigment that lends natural depth and a slightly yellowish neutrality to various color mixtures and textures. Writers and practitioners alike describe it not only by its inherent hue—as a dependable, natural brown that stands alongside other classic tones like burnt sienna and yellow ochre—but also for its functional role in achieving subtle shifts in tone and atmospheric effects. For instance, texts note how raw umber, when mixed with white, can be used to model half tones in drawing [1] and, when paired with chrome yellows or raw sienna, contributes to complex, lifelike wood grains and stone colors [2], [3]. Its permanence and balance are underscored by comparisons that distinguish it from its 'burnt' counterpart, emphasizing its lighter, more neutral properties [4] and its utility in producing fine gradations in monochrome studies [5].