Orange combines the energy of red and the happiness of yellow. It is associated with joy, sunshine, and the tropics. Orange represents enthusiasm, fascination, happiness, creativity, determination, attraction, success, encouragement, and stimulation. Orange increases oxygen supply to the brain, produces an invigorating effect, and stimulates mental activity. It is highly accepted among young people. Orange is the colour of fall and harvest. In heraldry, orange is symbolic of strength and endurance. Orange has very high visibility, so you can use it to catch attention and highlight the most important elements. Blue is associated with depth and stability. It symbolizes trust, loyalty, wisdom, confidence, intelligence, faith, truth, and heaven. Blue is considered beneficial to the mind and body. It produces a calming effect. Blue is strongly associated with tranquillity and calmness. In heraldry, blue is used to symbolize piety and sincerity. Blue is the coolest colour, the colour of the sky, ocean, sleep, and twilight.