고려시대에는 염색기술이 발달하여 자색은 대외교역물이 되었고, 상위의 왕과 군인, 승려 등으로 사용이 제한되었다.
During the Goryeo Dynasty, dyeing technology was developed, and purple became a foreign trade item, and its use was restricted to kings, soldiers, and monks of higher rank.