Modern society is an age of communication. Communication involves sharing personal opinions, emotions, and information in the changing digital environment. The communication contains individual messages that gather to form an identity. Folk paintings came from the public, and fashion illustrations reflect individual aesthetic characteristics. These two concepts are common in expressing an individual or containing an individual's message. Currently, fashion illustration has a wide range of expression methods as digital fashion illustration, by applying and utilizing digital technology. In addition, it is expanding its area by establishing its area as an artistic aspect of original visual expression. Therefore, this study aims to design Korean digital fashion illustrations by utilizing the formative elements of folk painting to communicate identity. In addition, based on the formative nature of folk paintings, six types of digital fashion illustration designs were presented. To design Korean traditional style illustrations in which the formative elements of folk paintings appear, the formative characteristics of folk paintings were reclassified into three characteristics: intense color expression, disregard for proportional relationships between objects, and flattening objects to design Korean traditional style illustrations in which the formative elements of folk paintings appear. Four folk paintings and four digital fashion illustrations expressing the reclassified characteristics, such as images of the Daeran skirt, Jeonhaengut skirt, Dangui, Saekdong jeogori, and Hwarot, were collected to apply the formative image of Hanbok. Based on this, it was expressed by adding the identity of our tradition by extracting colors from the formative elements of the shape of the Hanbok and representing the shape as a geometric pattern. This study found a limit to expressing abstract things such as 'tradition' or 'Korean style,' except for expressions defined with pattern photos or elements of Hanbok in works using various digital effects. Both folk painting and fashion illustration have a common goal of communication in which individuals express their identity in a community. Therefore, through this study, it is hoped that this research will be helpful as primary data for the illustration of Hanbok based on folk paintings and improve recognition that finding a design method to express Korea is necessary.