Blue represents peace, tranquility, calmness, stability, harmony, unity, truthfulness, trust, confidence, conservatism, safety, cleanliness, order, loyalty, sky, water, cold, technology and depression. Blue can "slow down the pulse, lower the body temperature and reduce the appetite". Blue is considered as a business color because it reflects reliability.

Black has no light, so it has no color. It represents power, sex, sophistication, formality, elegance, wealth, mystery, fear, evil, anonymity, unhappiness, depth, style, sadness, regret, anger, underground, mourning and death.

Green represents nature, environment, health, good luck, rebirth, youth, vigor, spring, generosity, jealousy, inexperience, jealousy and misfortune.

Orange means energy. Orange is reminiscent of autumn leaves, pumpkins and Halloween. It symbolizes balance, warmth, enthusiasm, vitality, splendor, and needs attention.

Purple represents royalty, spirituality, nobility, ceremony, mystery, transformation and wisdom.

Red is the warmest and most energetic color. We associate red with love, Valentine's Day, danger, desire, strength, violence and anger.

White represents purity, cleanliness, peace, modesty, innocence, youth, birth, winter, snow, harmony and marriage.

Yellow represents joy, happiness, optimism, idealism, imagination, hope, sunshine, smmer, gold, philosophy, dishonesty, cowardice, betrayal, jealousy, deception, illness, spirituality and inspiration. It is found that yellow can increase people's appetite.