The visible spectrum is very present in the art of tattooing, where the different colors of inks used in the tattoo represent the different wavelengths of light in the visible spectrum. These tattoos can be designed in various ways, such as a spectrum of colors that gradually blend into one another, or a series of lines or shapes that represent the different colors of the spectrum. These designs can be used to symbolize a range of emotions or ideas, such as the beauty and diversity of life, or the spectrum of human emotions. They can also be used to represent a person's connection to science or physics, as the visible spectrum is a fundamental concept in these fields. Additionally, these tattoos can be used to represent the idea of unity and acceptance, as the colors of the spectrum come together to form a cohesive whole.

A rainbow tattoo often uses the seven colors of the spectrum: red, orange, yellow, green, blue, indigo, and violet. These colors are often used to represent the diversity of life, hope and positivity. Additionally, rainbow tattoos can also be used as a symbol of LGBTQ+ pride, as the rainbow flag is widely recognized as a symbol of acceptance and diversity. It can be a symbol of love, hope and joy.