The term 'New three-series black and white gradient color' refers to a design or color scheme featuring a gradient of black and white colors, often used in fashion, interior design, or graphic design. In the context of the 'New three-series,' it could be a specific product line or model by a brand that employs this color scheme. The gradient effect is achieved by blending the two colors gradually, creating a visual transition that adds depth and interest to the design.