Red is a very emotionally charged color. It tends to increase the respiration rate and can even raise your blood pressure. It creates excitement and can be associated with danger, war, power, strength, passion, desire, and love. It can even increase your appetite.
Yellow is happiness. It is the color of sunshine and cheerfulness. When yellow is very bright, it attracts attention and helps stimulate mental activity. Yellow can also provide a very sharp contrast to dark colors. It’s associated with energy and technological innovation.
Blue is a trusted color. It provides a sense of tranquility and security. It symbolizes loyalty, wisdom, trust, faith, confidence, and intelligence. While red helps increase appetite, blue has the opposite affect and actually suppresses it.
Orange is the combination of the happiness of yellow and the energy and strength of red. It symbolizes creativity, determination, enthusiasm and success. In addition, orange indicates affordability. Because of its similarity to red, it is great to promote food.
Green suggests endurance and stability. It represents harmony, growth, and freshness. Green indicates safety, money, and wealth. Green is the primary color used to promote organic foods and products because it is associated with nature.
Violet or purple combines the energy and strength of red with the stability of blue. It represents nobility, ambition, power, and luxury. It symbolizes extravagance and wealth and is often associated with dignity, independence, wisdom, and magic.
White is purity, goodness, light, and innocence. It is considered perfection. White is generally positive and simple. Often it is the color of charitable organizations, low-fat foods and dairy products.
Black is elegant, powerful and formal, but can also be associated with death. In marketing, it is dignified. In certain contexts, black is very negative (blacklist, black humor, etc). It can also denote prestige.