Even if in some cultures it is received as the closest to black and dark shades, therefore as a negative color, blue stands as a symbol for optimism, positive feelings and emotions, a state of peace and well-being. This color is used in color therapy to bring tranquility into people's life, to help them relax and calm down. For instance, experts recommend blue in sleep disorders.

Blue shades as dream images usually denote idealistic and rational individuals. Blue in dreams also denotes self-control, ambition and will power. These are individuals who have a positive view on life and the world, self-confident and self-aware. They have the energy, resources and skills required to be successful in life and climb up the social ladder. Consequently, if one has a dream in which blue is the dominant color, then he should consider it an advice to take up the actions (such as an important business) he was considering in the waking life.

When premonitory, blue shades in dreams are good omens foretelling prosperity, great accomplishments, the attainment of goals, good luck and happy events to follow in one's waking life. Blue as dream image may also be reflective of the emotional balance and general life equilibrium one has achieved or is going to achieve soon.

On the other hand, we should not forget about the fact that one of the most frequently used phrases to denote sadness, grief and distress is 'to feel blue.' Consequently, blue color in dreams may be interpreted as a metaphor for a general state of depression, unhappiness and disappointment.