BestMoodRings.com has a mood ring color chart. This chart shows the colors most commonly associated with mood rings and the emotional significance behind the colors.
The chart associates the color black with negative emotions, such as fear, anger and depression, while it associates pink with elevated positive emotions, such as love and affection. The chart indicates that a blue color on a mood ring conveys emotions of peace, acceptance and relaxation. Along with blue, the most common color that appears on a mood ring is green, which, depending on the shade of green, can represent a neutral mood or feelings of distress and jealousy.