A certain wavelength of light lying within the visible spectrum, while being the shortest wavelength. On average, it is about 475 nanometers. Its very near the ultraviolet spectrum, which is bluer than a normal human can see. It is the color of the sky, ocean, and some peoples' eyes. Honestly, I'm hoping only the colorblind are seeing this, cuz otherwise this is kinda dumb.
Eiffel 65's song "Blue (Da Ba Dee)," that was released in 1999, is a popular Eurodance song which peaked at #2 on the Billboard Hot 100 in the United States, and reached #1 in 17 countries
Blue, is originallytransparent, but when someone holds it, the blue sucks the sadness away from the person.
Ghostbur from the DreamSMP is always seen with blue.
He passes it around as he wants others to be happy, he holds it so much he forgets all his sad memories.