Blue Hat in dreams
Authority worn on the head — the role you have put on.
How blue changes the reading
The base reading of Hat
A hat in a dream is the dictionary's image of authority — the kind that is worn rather than earned in the moment. A hat that fits is the dream confirming that the role is yours; a hat too big is the dictionary's image of a role you have been asked to play that you have not grown into yet.
Where you often see it. A hat placed on your head by someone else. A hat that does not fit. The dream uses the hat for authority worn on the head — the role you have put on.
What it is not. A hat is not always a costume. The dictionary reads it as the role the dreamer has agreed to wear.
Related in the dictionary. Read hat with crown (the formal version), uniform, and any scene of role-taking.