What is traditional Korean clothing called?
Hanbok, a colorful, traditional style of dress, can be traced back to the time of the Three Kingdoms (57 BCE to 668 CE). Known for its vibrant colors, traditional hanbok represented the five elements of the Yin-Yang Theory: white (metal), red (fire), blue (wood), black (water), and yellow (earth). Today, hanbok is still worn on special occasions, such as holidays or weddings.
Source: The Culture Trip