Blue’s positive connotations are calmness, productivity, stability, conservative, traditional, and reliable. Some negative connotations of blue are sadness, cold/icy, loneliness, and distance.
In food, blue is associated with spoilage and poison. Because blue is so rare in nature, it is seen as the least appetizing color. It is proven that eating off of a blue plate can cause one to eat less and feel less hungry.
Blue’s calming effect can lower pulse and body temperature for short periods of time. It is also proven that people are more productive in blue rooms.
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