Based on economic and social development to discuss the application of traditional folk color culture in digital design, its purpose is to increase the national culture value in the digital design. Firstly, using Game theory analyzes the necessity of the application of traditional folk color culture in the digital design. Secondly, using computer graphics and mathematical language carry on the culture innovation of the traditional folk-custom color culture. Finally, explains practical application of the traditional folk-custom color culture in digital design. Through practice, proves the feasible of that the traditional folk color culture is used in the digital design.