The range of wavelengths of visible light from red to violet covers approximately 400 to 700 nanometers (nm). This range is often represented using the mnemonic "ROYGBIV," which stands for red, orange, yellow, green, blue, indigo, and violet. While the boundaries of each color within this range may vary slightly depending on individual perception, the approximate wavelength range for each color is as follows:
- Red: Approximately 620 to 750 nm
- Orange: Approximately 590 to 620 nm
- Yellow: Approximately 570 to 590 nm
- Green: Approximately 495 to 570 nm
- Blue: Approximately 450 to 495 nm
- Indigo: Approximately 425 to 450 nm
- Violet: Approximately 380 to 425 nm
It's important to note that these are approximate values, and the perception of color can vary slightly among individuals.