Melange fabric is a fabric that has been made with more than one color of fabric, either by using different colored fabrics or made with different fabrics which are then individually dyed. For example, when mixing black and white fibers, it results in a gray-colored melange fabric.
If the fabric is to be dyed later, it is made of two or more types of fiber. This fabric is then dipped into multiple dye baths, specifically made so that each fiber in the fabric will only absorb certain dyes. The type of fabric is also called heather or cross-dyed fabric.