In the infrared spectrum, sunlight does not have a color that is visible to the human eye. The infrared spectrum consists of wavelengths longer than those of visible light, which range from approximately 700 nanometers (red) to 400 nanometers (violet).
Sunlight emits a broad spectrum of electromagnetic radiation, including ultraviolet (UV), visible, and infrared light. The visible part of the spectrum, which we perceive as colors, includes the colors of the rainbow: red, orange, yellow, green, blue, indigo, and violet.
Beyond the red end of the visible spectrum are the infrared wavelengths, which are longer than what the human eye can detect. Infrared radiation is typically felt as heat rather than seen as a color. Infrared light is important for various applications, such as thermal imaging, remote sensing, and communication.
In summary, sunlight in the infrared spectrum is not visible as a color to the human eye; instead, it consists of longer wavelengths that we perceive as heat.