Contrast stitching is a sewing technique used to add decorative stitches in contrasting colors or patterns on a garment, accessory or textile. The purpose of this embellishment is usually to create visual interest and highlight specific design elements such as logos, pockets or seams. Contrast stitching can be done by hand or machine using various types of thread, including cotton, polyester, metallic or even sparkly ones. It's commonly used in fashion, sportswear, footwear and interior design to add a touch of style and sophistication.