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RGB colour spaces explained

September 27, 2024 by Matthias Betz

RGB colour spaces are colour systems that represent different hues with the three primary colours red, green and blue. RGB colour spaces are used in digital image processing, photography and computer technology to precisely define colours. The most important RGB colour spaces and their special features are: sRGB sRGB is the most widely used RGB colour space and is used by most monitors, printers and digital cameras. It was developed by HP and Microsoft in the 1990s to create a standard for colour representation on the internet and on various …

“Digital First” often means “Colour Problems Second!”

August 15, 2022August 5, 2022 by Matthias Betz

Recently, we have been receiving more and more colour management consulting enquiries where “digital first” designs reach their limits: Namely, always when, after a few months or years, the first trade fair appearance, the first annual report or the first catalogue in classic online printing is due. And it is precisely at this moment that it occurs to everyone involved that they do not even know how their “digital first” colour strategy is supposed to look in print. But let’s take a look at the problem from the beginning:

Gamut map: The colour tool for cross-media design

May 8, 2020March 12, 2020 by Matthias Betz

Due to our involvement with freeColour e.V., at the last meeting in Switzerland the desire for a cross-media tool for designers was expressed with which one can create intersections of colourspaces from the freieFarbe CIELAB HLC Colour Atlas XL. With Gamutmap, Proof GmbH has now created such a tool, which is available to all designers free of charge. With Gamutmap nearly 100 individual colour spaces can be indicated from 34.250 colours of the entire CIELAB colour space, or intersections from many combined colour spaces can be indicated. An example: As …

Why is the embedding of RGB profiles so important?

November 23, 2018November 23, 2018 by Matthias Betz

A few days ago we received a call from a customer in the field of design, who sent open Adobe InDesign data in ISOCoatedV2 300% with contained RGB images to the production company for a complex CD production on the advice of the producing company (“The printing company still has a prepress stage, which can then prepare your data optimally…”). The result of the finished printed CD booklets and inlays did not correspond at all to the calibrated monitor image of our customer, the client was also unhappy and requested …

Comparison between eciRGB_V2 (white) and AdobeRGB 1998

Which RGB working colour space is suitable for colour-consistent work?

May 8, 2020March 20, 2012 by Matthias Betz

In the early days of color spaces Apple and e.g. Photoshop up to version 5.5 set the monitor color space as working color space by default. But it soon became clear that a design office would be working with 10 Macs in 10 different color spaces. A neutral concept was needed. There are many RGB Colour Spaces around. In the area of print media there are currently primarily three different variants: sRGB, AdobeRGB(1998) and eciRGB_V2. The sRGB color space is widely used in digital cameras and is the industry leader …

Embed profiles for proofing? Yes or No?

May 8, 2020February 15, 2012 by Matthias Betz

The question often arises whether color profiles should be embedded in the PDF files for proofing. To answer the question, you have to get some answers: The proof should simulate the subsequent offset printing. For offset printing, with few exceptions, the imagesetters have been configured so that a 70% black in the file is displayed as 70% black on the printing plate, no matter what profile was specified in the file. It didn’t matter whether it was coated paper or uncoated paper: 70% in the file corresponded to 70% on …