The term 'Raw or 'BURNT' Color' refers to two distinct shades of brown. UMBER is a dark brown color, often described as being similar to the color of soil. It is composed of a combination of red, yellow, and black pigments. SIENNA is a lighter shade of brown, with a reddish-orange hue. It is composed of a combination of red and yellow pigments. Both UMBER and SIENNA are earthy colors that are commonly used in art and design.