Depending of the sun design sun tattoo can have different meaning. But just simple pure black sun tattoo is usually reflection of the deep natural symbolism. It has similar meaning in different cultures around the world. Sun is beginning of everything and the source of the life. Black sun tattoo is usually tattooed in black because it is the most preferred ink color for tattooing. But good tattoo results can be achieved also using different colors of ink (like e.g. red).