ROYGBV

ROYGBV is an initialism for the sequence of spectral colours that make up the visible spectrum: red, orange, yellow, green, blue, and violet.

  • The human eye is tuned to the visible spectrum and so to the spectral colours between red and violet.
  • The visible spectrum is the small band of wavelengths within the electromagnetic spectrum that corresponds with all the different colours we see in the world.
  • Strictly speaking, a spectral colour is produced by a single wavelength of light but in real life, spectral colours are usually composed of small bands of contiguous colour.
  • When white light passes through a prism, it undergoes refraction and dispersion, causing it to separate into its constituent colours, including the hues ROYGBV.
  • ROYGBV are commonly associated with the colours of a rainbow.
  • A rainbow spans the continuous range of spectral colours that make up the visible spectrum.
  • Some observers see a distinct cyan or indigo arc in rainbows producing the initialisms  ROYGCBV and ROYGBIV.
  • The perception of distinct bands of colour in a rainbow is attributed to the physics of light and the human eye’s sensitivity to different wavelengths of light.

ROYGBV is an acronym for the sequence of hues (colours) commonly described as making up a rainbow: red, orange, yellow, green, blue, and violet.

  • A rainbow spans the continuous range of spectral colours that make up the visible spectrum.
  • The human eye is tuned to the visible spectrum and so to spectral colours between red and violet.
  • ROYGBV are colours associated with a range of wavelengths rather than with unique values.
  • The visible spectrum is the small band of wavelengths within the electromagnetic spectrum that corresponds with all the different colours we see in the world.
  • The fact that we see the distinct bands of colour in a rainbow is an artefact of human colour vision.