Red is the color at the end of the visible spectrum next to orange, and at the opposite end from violet. The wavelength of red lightis approximately 620–740 nm on the electromagnetic spectrum.
Red is the color of blood, and because of this it has historically been associated with sacrifice, danger and courage. Modern surveys in the United States of America and Europe show red is the color most commonly associated with heat, activity, passion, sexuality, anger, love, and joy. In China and many other Asian cultures, it is the color of happiness.
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