Blue conveys importance and confidence without being somber or sinister, hence the blue power suit of the corporate world and the blue uniforms of police officers. Long considered a corporate color, blue, especially darker blue, is associated with intelligence, stability, unity, and conservatism.
Good Blue
* True blue - someone loyal and faithful
* Out of the blue - unexpected (could be positive or negative)
* Blue ribbon - first rate, top prize
* Blueblood - person of noble birth, royalty
* Bluestocking - well-read or scholarly woman
* Bluebook - register of socially prominent people
* The Blues (capitalized) - popular style of music sometimes characterized by melancholy melodies and words
* Baby blues - Blue eyes (also see Bad blue words)
Bad Blue
* Feeling blue - feeling sad or depressed
* Blue devils - feelings of depression
* The blues (not capitalized) - depression, state of sadness
* Blue Monday - feeling sad
* Baby blues - post-partum depression
* Singing the blues - bemoaning one's circumstances
* Blue laws - laws originally intended to enforce certain moral standards
* Blue language - profanity
* Bluenose - puritanical individual
* Into the blue - entering the unknown or escape to parts unknown
* Out of the blue - unexpected (could be positive or negative)