International Commission on Illumination

The International Commission on Illumination (usually abbreviated CIE for its French name Commission internationale de l'éclairage) is the international authority on light, illumination, colour, and colour spaces.

It was established in 1913 as a successor to the Commission Internationale de Photométrie, which was founded in 1900, and is today based in Vienna, Austria.

The CIE has six active divisions,[1] each of which establishes technical committees[2] to carry out its program: Two divisions are no longer active.

The President of the CIE from 2023 is Jennifer Veitch from Canada.

[11] CIE publishes Technical Reports (TRs), International Standards (ISs) and Technical Notes (TNs).

The CIE 1931 colour space chromaticity diagram with wavelengths in nanometers . The colors depicted depend on the color space of the device on which the image is viewed.
A chromaticity plot in three dimensions of the CIELUV color space
A chromaticity plot in three dimensions of the CIELUV color space