In order to deeply understand original paintings in spatial art, this paper analyzes the expression path from the perspective of color narrative. Firstly, it introduces color narrative and original paintings in spatial art respectively, and understands the artistic connection between the two. Secondly, it introduces the two forms of color narrative expression, that is, in original paintings in spatial art, colors can express emotions and shape the space, which further verifies the importance of color narrative in artistic creation. Finally, from three aspects: obtaining original inspiration through traditional painting as a medium, using modern artistic techniques to express spatial art, and forming an individual style of original paintings, this paper explores the expression path of original paintings in spatial art based on color narrative. On the one hand, it provides ideas for art creators to flexibly use color narrative for the creation of original paintings in spatial art, and on the other hand, it can provide a more layered artistic space for the general audience.