The purpose of this study is to identify the figurative characteristics and symbolic meanings of the patterns of royal families in the late Joseon Dynasty based on the theoretical examination as well as the overall characteristics of the colors based on the quantitative analysis of colors. This study focused on the costumes of King Young royal families in the late Joseon Dynasty which is the last costume of Joseon Dynasty and classified 129 relics under preservation for the analysis. This study analyzed the colors using the digital data in the picture brochure as the previous studies did and presented the color palette. Based on this, a variety of textile designs that are developed by using the traditional patterns and colors could be applied to the modern fashion designs. For Patterns used in costumes of King Young royal families, the five pattern categories include animals, plants, letters, and geometric patterns and the final category of other types. The features of color in the costume were v tone of Y color and lt and p tones of Y color. The implication of this study is to develop textile designs which reflects conversion of past and modern cultures and cultural identity by applying the traditional cultural elements through literature review and empirical study and theses developed 8 textile designs could be applied to the various modesrn fashion designs.