Abstract
This study is purposed to understand the color usage of space programming in detail for architectural design. Many documents have commonly prescribed the spacial composition for this library. The space program and function in the public library have changed with the new media and digital information system. The solution includes digitally storing information and creating space specifically designated for books that can be expanded without encroaching on public space. The Seattle public library was designed by Rem Koolhaas. He offered the first glimpses of Seattle's new central library rather than a conventional high-rise building with straight. He pushed and pulled out the floor and elevation, creating an angular effect. In particular, the Seattle public library was composed of the five stable space that has simple function and the four unstable space that has complex function to figure out the complicate zoning program in variable space. Each of the five stable spaces is a programmatic cluster that is architecturally defined and equipped for maximum, dedicated performance. The four unstable spaces in between the function as trading floors where librarian inform and simulate, where the interface between the different platforms is organized. The two types space was expressed with different color system that has basic criteria which function has unique color. So the unstable space having complex function was painted variable colors that were explaining their function.