Dragon robe (hanja: 衮龍袍, pinyin: gǔn lóng páo, hangul: 곤룡포; ) was the everyday dress of the emperors of China (after Sui dynasty) and kings of Korea (Goryeo and Joseon dynasty) and emperors of Vietnam (Nguyễn dynasty) and kings of Ryukyu. It resembles a Danryeong.
Dragon robe of Tang dynasty
Dragon robe of Ming dynasty
Dragon robe of Qing dynasty
The Royal culture of Joseon was influenced from imperial culture of china 'Ming dynasty' at that time, with China referring to gonryongpos as hwangnyongpo (hangul: 황룡포; hanja: 黃龍袍), and Joseon called it gonryongpo, and each had a different color. The hwangryongpo of China was yellow, and the gonryongpo of Joseon was red.
There was normally a dragon embroidered in a circle on gonryongpos. When a king or other member of the royal family wore a gonryongpo, they also wore an ikseongwan (익선관, 翼善冠)(a kind of hat), a jade belt, and mokhwa (목화, 木靴) shoes. During the winter months, a fabric of red silk was used, and gauze was used during the summer. Red indicated strong vitality.
Gonryongpos have different grades divided by their color and belt material and a Mandarin square reflecting the wearer's status. The king wore scarlet gonryongpos, and the crown prince and the eldest son of the crown prince wore dark blue ones. The belts were also divided into two kinds: jade and crystal. As for the circular, embroidered dragon design of the Mandarin square, the king wore an ohjoeryongbo (오조룡보, 五爪龍補)--a dragon with 5 toes—the crown prince wore a sajoeryongbo (사조룡보, 四爪龍補)--a dragon with 4 toes—and the eldest son of the crown prince wore a samjoeryongbo (삼조룡보, 三爪龍補)--a dragon with three toes.