A few days ago, our DIN SPEC 16699 “Open Colour Communication” was published and is now available for free download from DIN’s Beuth-Verlag.
Matthias Betz from Proof GmbH, Holger Everding from DTP Studio Oldenburg, Jan-Peter Homann from Homann Colormanagement in Berlin and Eric. A Soder from Pixsource in Switzerland, all members of the association freieFarbe e.V., have shown in the bilingual DIN specification a way to create high-precision color samples on the basis of open source, license-free standards and have shown ways for cross-media color communication.
The 44-page PDF is bilingual in German and English and can be ordered directly from Beuth Verlag, which distributes the DIN standards in Germany, and downloaded free of charge after a short registration.
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
freeColor e. V. is a consortium of German and Swiss color experts who work to produce consistent color in all areas of application. Sounds reasonable? Exactly. That is the issue that is of central importance to our proofing customers. Therefore we are currently working in a project with the colleagues of FreieFarbe e. V. and are now also as Proof GmbH member and partner of FreieFarbe e. V.
FreeColor relies on open standards such as LAB and HLC, which have long been integrated in computer software and want to show: the computer is an ideal tool for color, it can make color free! The association FreieFarbe e. V. aims to promote colour communication without pursuing commercial goals.
freeColor e. V. would like to promote developments that…
Make coulor calculable
Make colour applicably
Make ink systems comparable
Simplify color communication
Have no license costs
Give Tips and hints for a correct cross-media colour workflow
make the multiple mysteries of color understandable
In recent months, Holger Everding, Peter Jäger, Eric A. Soder and Jan-Peter Homann have developed a completely new approach to this, which we were able to develop together with our colleagues into a product that we will present shortly.
We would like to take this opportunity to point out a great feature of the website of FreieFarbe. de: The colour database: Here you can look up the most important colour values for more than 300 colour systems and calculate colour comparisons of all kinds.
For the work within the association FreieFarbe e. V. the association is always looking for competent companions. If you, like us, are touched by the subject of colour in a variety of ways, there are many opportunities at fF to contribute with your knowledge and strengths. If you feel like our good cause, please contact us!