Blue always has something to do with intellectual or spiritual events, insights, experiences, and mental processes. It is the opposite of the emotional red, because it is “cool” and “analytical.” A soft, gentle blue is typically a female color. Blue is a symbol of the emodonal calm and contentment that we all would like to attain. It indicates that you live wisely and with compassion. Blue stands for intellectual goals and insight, faith, and spiritual maturity.
Color Therapy: Blue has antiseptic, cooling, and constricting qualities. It supports healing in case of hyperthyroidism, sore throat, inflammation, fever, ear infection, mental exhaustion, nervousness, high blood pressure, and anxiety.
Depth Psychology: The color of “faraway places” and of infinity, blue is a symbol of faith, longing, and relaxation—but also of turning within, back to the true self, back to the “I.”... Dreamers Dictionary