With the implementation of the "Double Reduction" policy, school club activities have been further strengthened in terms of form, content, and organizational structure. Watercolor painting offers advantages that other painting forms do not possess, such as convenient tools and broad artistic inclusivity, and it plays a significant role in color enlightenment education in China's art curriculum. Color learning is an essential foundational component of art education at the primary school level. To enhance primary school students' color learning abilities and core artistic competencies, this study investigates the current state of color learning in primary schools and aims to explore effective teaching strategies for color instruction in watercolor painting clubs. It also seeks to provide innovative practical examples for color teaching in primary school art clubs.