Matching black, white, and gray colors is a common practice in design, fashion, and interior decoration. These neutral colors are often used together to create a balanced and timeless look. In design, this color palette can evoke a sense of sophistication and simplicity. In fashion, it's popular for creating versatile outfits that can be mixed and matched with other colors. In interior design, black, white, and gray are often used to create a sleek, modern aesthetic.