In physics, color is associated specifically with electromagnetic radiation of a certain range of wavelengths visible to the human eye.

For most humans, colors are perceived in the visible light spectrum with three types of cone cells (trichromacy). Other animals may have a different number of cone cell types or have eyes sensitive to different wavelengths, such as bees that can distinguish ultraviolet, and thus have a different color sensitivity range. Animal perception of color originates from different light wavelength or spectral sensitivity in cone cell types, which is then processed by the brain.

A color wheel or color circle is an abstract illustrative organization of color hues around a circle, which shows the relationships between primary colors, secondary colors, tertiary colors etc.

Our eyes can see many colors of visible light. Sunlight is a mixture of many colors together. Light from the sun looks white to our eyes. All of the colors are in white light, they are just all mixed up. To see all the colors separately, you can use a prism. A prism is a piece of glass or plastic in the shape of a triangle. The colors of the rainbow in order are: red, orange, yellow, green, blue, indigo, and violet. Many people remember this by the first letters that spell Roy G. Biv.

Light or visible light is electromagnetic radiation that can be perceived by the human eye. Visible light is usually defined as having wavelengths in the range of 400–700 nanometres, corresponding to frequencies of 750–420 terahertz, between the infrared and the ultraviolet.

Color therapy, also known as chromotherapy, is a holistic healing practice that uses the power of colors to balance and enhance the body's energy centers and promote physical, mental, and emotional well-being

In spiritual traditions, colors are often seen as symbolic representations of energy, emotions, and higher states of consciousness. Each color is believed to hold specific meanings and can be used in rituals, meditation, and healing practices to evoke certain states or connect with spiritual aspects.

Science is the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.