The NB blue and red color scheme refers to a specific color combination often used in the branding of the sportswear company New Balance. It is characterized by its vibrant blue and red hues that are prominently featured in the company's logos, products, and marketing materials. This color scheme is designed to be eye-catching and convey a sense of energy and dynamism, aligning with the brand's image of being a leader in the athletic footwear and apparel industry.