This is related to the PRE 1958 COLORANT CLASSIFICATION. These products appear on the API’s 1980 list for colorants used in food contact papers. Please contact us for details.

Computer monitors and screens are unable to show the true color of a colorant. The color shown can be influenced by screen brightness, different light sources in the room and quality of the monitor.

1/9 depth refers to the ISO standard depth scales which scale from 2/1 to 1/25 standard depth. It is easier to compare colorants which have the same standard depth. In this case 1/9 depth refers to how deep it has been dyed and (%) refers to the concentration needed to achieve that depth.

Color Finder is a colorant search engine. If you are interested in a product please contact us via the contact form or contact your local Archroma representative directly.

The Color Finder is displaying Archroma’s key colorants. In line with Archroma’s normal business practices, the product portfolio of our company is always subject to periodic review. Accordingly the Color Finder is updated continuously. If you cannot find what you’re looking for, please contact us.

Archroma is using the CIELab colorspace. It is explained in Wikipedia as follows:“The CIELab color space describes mathematically all perceivable colors in the three dimensions L* for lightness and a* and b* for the color opponents green–red and blue–yellow. It describes all the colors visible to the human eye and was created to serve as a device-independent model to be used as a reference. The CIELCh color space is a CIELab cube color space, where instead of a*, b*, the cylindrical coordinates C* (chroma, relative saturation) and h° (hue angle, angle of the hue in the CIELab color wheel) are specified. The CIELab lightness L* remains unchanged.”