HLC Colour Atlas – freieFarbe e.V.
We developed the HLC* Colour Atlas and see it as a new basis for all stages of professional colour communication – from design to the final product. The printed atlas is the central tool. The ring binder contains 2040 CIELAB-HLC colours (over 13.000 in the XL Version), which are systematically arranged by hue/base colour, lightness/brightness and chroma/saturation. The atlas is an exemplary implementation of the CIELAB colour space, which was introduced by the Commission Internationale de l’Eclairage in 1976 and has since established itself worldwide in colour management, colour measurement and colour formulation. The model has great advantages: The project is completely based on open standards – for colour definitions it is the CIELAB colour model, for the production of physical samples it is proof printing systems according to ISO 12647-7 and for the exchange of spectral data it is the CxF file format. All data is published under CreativeCommons license. This means: All users can freely use the developed colour data and samples and further develop them.
via https://www.freiefarbe.de/en/thema-farbe/hlc-colour-atlas/