Raw linen shade, also known as ECRU, is a light tan color that is often used in interior design. It is a neutral hue that can be used to create a calming atmosphere in any room. The term 'raw linen shade' is derived from the fact that it resembles the natural color of unbleached linen fabric. ECRU is a versatile color that can be used to create a variety of looks, from modern and contemporary to traditional and rustic.