Go-shiki Kenjo symbolizes all phenomena in nature.Silk obi or sash of Hakata-ori presented to the Shogunate during the Edo Period became the prototype of Hakata-ori textile thereafter.
During the Edo Period, the then feudal lord of the Fukuoka domain, Kuroda Nagamasa, presented to the Shogunate a Hakata-ori obi of a geometric design, in five individual colors of purple, green, red, yellow and blue dyed by ancient dyeing method. This particular design has been called kenjo (meaning dedication or presents to the superior) and go-shiki means five colors.
In ancient Chinese philosophy, the five colors were related to the principle of the five elements, wood, fire, earth, metal and water, which constitute the base of all phenomena in nature. In Japan the five colors correspond to the five cardinal virtues of Confucianism: purple for righteousness, green for benevolence, red for propriety, yellow for trust and blue for wisdom.
Righteousness
Purple (the root of gromwell or Lithospermum erythrorhizon) is the color of repose, grace and mystique. Considered to be the color for high personages since ancient times. In ancient China, it was the color of the gifts from the emperor.
Benevolence
Green (Miscanthus tinctorius, and Japanese indigo plant or Polygonum tinctorium) is, in the doctrine of Yin and Yang and the five elements, green corresponds to the east, and also to spring, the first season of the year. This is also the color of calmness and tranquility and symbolizes peace.
Propriety
Red (the root of madder or Rubia condifolia) is derived from the rising sun, and represents true sincerity, and also symbolizes happiness and wealth.
Trust
Yellow (the bark of myrica or Myrica rubra) is the color of earth and corresponds to the center of the 4 lines of the compass in the doctrine of Yin and Yang and the five elements. It symbolized unrelenting power of the emperor and its use by any other was prohibited.
Wisdom
Blue (Japanese indigo plant or Polygonum tinctorium) is a powerful and dignified color representing confidence. Containing a reddish hue within, this deep blue color gives the impression of industrious and intellectual impression.
Note: Inside the parenthesis are the dyestuffs used for reproduction of Go-shiki Kenjo

Japanese