What does it mean when you dream of a blue envelope?

Envelopes in a dream signifies anticipation or opportunity. Unopened envelopes indicates sad news or missed opportunities.

The color blue represents truth, wisdom, heaven, eternity, tranquility, openness, loyalty, and devotion. It might be a desire to get away. This color in your dream may be a symbol of your spiritual guide and your optimism of the future. However, depending on the context of your dream, blue might be a metaphor for feeling sad.