This study investigates the color of daily clothes of middle era of Yi dynasty by examining the color of excavated clothing which was the real clothes in 16th and 17th centuries. The purposes of this study lie in understanding emotional feeling observed by exact measurement of the color of the excavated and devising a method of reserving the color of the excavated by inspecting the discolored color of the excavated. For this, the color difference was measured by color measuring system. Minolta Chroma-meter, and then recorded in L*a*b system. The 3-dimensional color difference was observed by analyzing these data on Methmetica and change in color with ageing was assessed by reconstructing the color by Phoposhop. The color construction of daily clothes of middle era of the Chosun Dynasty was founded on a philosophy, and it was made up of colors such as white, brown, and blue. This color construction seemed to be based on the philosophy of naturalism symbolizing surrounding nature, e.g., white symbolizes Bak-sasang(bak-philosophy) and blue implies Eumyangohangsul.