# ISO 11664-1:2007 — Withdrawn and superseded ISO standards For ISO 11664-1:2007, item title is Colorimetry — Part 1: CIE standard colorimetric observers; status code is 9599; successor is ISO/CIE 11664-1:2019; withdrawn / published date is 2007-10-15, recorded from its source on 2026-08-05. - **Identifier:** ISO 11664-1:2007 _(verified: appears in the quote below)_ - **Item title:** Colorimetry — Part 1: CIE standard colorimetric observers _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/CIE 11664-1:2019 - **Withdrawn / published date:** 2007-10-15 _(verified: appears in the quote below)_ ## What the source says > 52495,IS,,ISO 11664-1:2007,Colorimetry — Part 1: CIE standard colorimetric observers,Colorimétrie — Partie 1: Observateurs CIE de référence pour la colorimétrie,2007-10-15,1,['17.180.20'],CIE,9599,"[37408,52494]",[74164],"['en','fr']",29,

ISO 11664-1:2007 comprises ISO 10527:2007 and ISO 10527:2007/Cor.1:2008. Its technical content is identical to that of ISO 10527:2007. ISO 10527:2007/Cor.1:2008 changes the reference number of the standard from 10527 to 11664-1.

ISO 11664-1:2007 specifies colour-matching functions for use in colorimetry. Two sets of colour-matching functions are specified: colour-matching functions for the CIE 1931 standard colorimetric observer and colour-matching ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).