The cognitive development of young children highlights the characteristics of concreteness and high color sensitivity, and the direct application of color is related to the transmission effect and warning effect of safety signs. In order to improve the recognition and warning effectiveness of kindergarten safety signs, and help children perceive safety information in a short period of time, this article conducts a series of analysis and research on the application of color in the design of kindergarten safety signs. The results show that adopting specific application strategies such as scientific color matching, layered color use, and precise adaptation not only improves the efficiency of identification recognition, but also reduces the safety risks of young children, providing a reference for the design of kindergarten safety signs.