History and Lore: In religious symbolism, blue signifies truth and is associated with the creative power of God. It has been used by priests at the grave, for it is symbolic of heaven. In ancient Rome, blue was worn by the public servants, thus marking the beginning of the idea for today's police uniforms. The expression "true blue" for constancy and fidelity perhaps originated with mariners, who associated the blue sky with freedom from storms. "Something blue" in the wedding jingle comes from the early Israelites, to whom blue symbolized love, fidelity, and purity. To the Navaho, the southern mountains are blue and have created the dawn. Daily Uses: When the eye is fully adapted to the dark, blue can be seen over a wider range of vision than red, thus making it useful for railroad signaling. In factories, blue often marks equipment to be repaired. It is also used as a sign of caution on switch boxes and control levers. Blue is associated with air mail and the navy. It is the color most preferred by men. A survey has shown blue to be the bestselling color in women's sweaters because women think men like it. Because it has a sedative effect, it is a beneficial hue for rooms intended for relaxation and rest. In a small room it creates a feeling of space. In foods, blue is found in blue plums and blueberries. Colorful Phrases: Feeling blue, singing the blues, blue movie, blue-ribbon winner, blue funk, blue jeans, bluenose, once in a blue moon, blue Monday, the wild blue yonder, blue blood, blue in the face, blueprint, bluegrass, blue laws, Bluebeard, the Bluebird of Happiness.
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