One of the three primary colors of light (three additive primary colors).

Red is the etymology of akashi, which means bright, and is paired with the etymology of black, which means dark.

The meaning of the word "obvious" still remains today, such as "a stranger" and "a bright lie."

By the way, the kanji character ``red'' is a combination of ``big'' and ``fire,'' and represents the color of a large, blazing fire.

Until the Heian period, yellow was also included in red.