DIN SPEC 16699 Open Color Communication Final Meeting Berlin. From left to right: Eric A. Soder, Jan-Peter Homann, Matthias Betz, Holger Everding
Last Monday, the authors Jan-Peter Homann, Holger Everding, Eric A. Soder and Matthias Betz took another milestone in the direction of free color communication in a final meeting at the German Institute for Standardization – DIN in Berlin: The last open points of DIN SPEC 16699 “Open Colour Communication” were discussed and approved. Now only the English version by Matthias Betz and Eric A. Soder and the final implementation and approval by DIN are missing. It is expected that DIN SPEC will be available for download in August. It is published free of charge as PAS – Publicly Available Specification by DIN in German and English.
In this DIN-SPEC we describe a procedure for precise color communication and color sample creation on the basis of open standards such as CIELAB, HLC, ICC and CXF file formats. We work with mathematical color models, high-precision color samples and exact spectral data as a basis for ink formulation at color manufacturers and service providers. Instead of mutually incompatible commercial standards, we show an open, and open-source approach to high-precision color communication.
Besides the DIN SPEC we are working at full speed on new projects and ideas and on different new versions of our free colour CIELAB HLC Colour Atlas.
It has taken almost a year, but we are all the more pleased now: The “CIELAB HLC Colour Atlas” is completed and can be ordered in our shop. The HLC Colour Atlas is a open source, high-precision colour system based on open standards.
The CIELAB HLC Colour Atlas offers professional users of colour three decisive advantages:
The CIELAB HLC colour atlas is based on open, non-proprietary standards that are free of copyrights and trademarks.
The colour atlas with all components is available to all users free of charge online and can be downloaded, used and passed on directly.
It is released under an OpenSource Creative Commons license.
The printed reference of the CIELAB HLC colour atlas impresses with outstanding precision and, unlike some commercial products, the colour accuracy is extremely high with a DeltaE00 median of 0.3 and an average DeltaE00 of 0.5. In most cases, the deviation from the ideal colour reference and colour differences between two colour atlases can be measured, but not perceived by the human eye. Each atlas is produced on our best Fogra-certified high-end proofing printer on Fogra-certified paper. Each copy is delivered with an individual, colorimetric test report in accordance with ISO 12647-7:2016 to document the color accuracy of each individual color atlas.
The atlas consists of the following components:
A printed colour atlas master reference (A4, ring binder) with 2040 colours, based on the intuitive HLC colour model (Hue, Lightness, Chroma), with shades of 10 between the individual colours. This also includes colors that are not reproducible in normal CMYK workflows (jewelry colors). This component is produced with the greatest care in Tübingen. The colour atlas contains an introduction and instructions for use in German or English.
A free PDF-Master version of the color atlas, which also displays numerous other color spaces such as sRGB, Fogra39, Fogra51 and 52 etc. via layers in the PDF file.
Color palettes with all 2040 LAB values for Adobe software in ASE format. We provide this library in a timely manner also in the SBZ format of Swatchbooker as well as in sRGB versions for LibreOffice (SOC), GIMP (GPL) and Scribus 1.4. x (XML). Scribus 1.5. x already contains the SBZ-file and a sRGB-version is shipped with LibreOffice since version 18.104.22.168, as well as with the current stable version Scribus 1.4.6.
A table with color conversion values of all colors of the atlas according to sRGB, HEX and ISOCoatedV2 in two rendering intents.
Spectral data of all color fields in a CxF v. 3 file containing the color data of all color fields in spectral values. This file enables, for example, paint manufacturers to use all colours of the atlas with high precision spectral spectral data or to create their own reliable references – open source and without licensing fees. For example, an ink manufacturer can simply load the CxF3 file into typical color formulation software and create the right mix for its printing inks. This applies not only to offset printing, but also to coatings, textile inks and plastics.
All files are available for free download under a CC license. Only the HLC colour atlas printed by Proof GmbH is subject to a fee, as production is very labour and cost-intensive. The introductory price of EUR 99, – is valid until the end of April 2018, starting in May EUR 149, — plus VAT and shipping costs.
We at FreieFarbe e. V. and Proof GmbH not only see the “CIELAB HLC-Farbatlas” as a genuine and open alternative to the hundreds of proprietary color systems, but we also believe that the highest quality standard of the printed color atlas can only be achieved by coating systems.
Since the beginning of January, we have also been working on converting our open colour system with the German DIN standards organisation into a DIN SPEC standard.
INVOLVED IN THIS PROJECT HAVE BEEN:
Holger Everding (DPT Studio Oldenburg), Jan-Peter Homann (Homann Colormanagement), Eric A. Soder (pixsource. com), Peter Jäger (pre2media. ch) and Matthias Betz (Proof GmbH) as well as Christoph Schäfer and Gregory Pittman (Scribus Team).
WITH THE FRIENDLY SUPPORT OF:
freeFarbe e. V. also thanks for the support of ColorLogic GmbH with its software ZePrA for special color optimization and ColorAnt for the acquisition of spectral data, Epson Deutschland GmbH for support with ink and GMG GmbH & Co. KG for the support with certified proof papers and their color proofing software.
CIELAB HLC Colour Atlas available in the Proof.de Shop was last modified: February 7th, 2018 by Matthias Betz