Brown pigments are natural earth-derived colors that are used in a variety of art and craft applications. The term 'brown pigments' encompasses three distinct colors: sepias, umbers, and siennas. Sepias are a dark brown color, often with a reddish or yellowish hue. Umbers are a deep, warm brown color, sometimes with a hint of red or orange. Siennas are a light to medium brown color, often with a yellowish or reddish hue. All three of these colors are derived from natural minerals and are used in a variety of art and craft projects.