Human beings have different physical conditions depending on the characteristics of individual genes and various diseases. Therefore, universal design is designed so that users can use it safely in various fields such as product, architecture, environment, and service in order to give consideration to everyone as much as possible and to convey accurate information. In particular, it is a color-universal design that color design which considers all the use of color which can increase the visibility of information to the user. International Free City is an internationally diverse city where many people come together for various purposes. Therefore, it is necessary to check the universal design in terms of the environment in which the users who experience the free international city are free from discomfort in communication, and based on this, we intend to improve the value added to the Asian Free International City.