Non-Photo Blue
color code: # A4DDED
Non-Photo Blue or Non-Repro Blue is a special color that is used in graphic design and in printing .
application
NPB is used by layout editors, for example, to write notes to the printer on the print template that are not visible in the final version. Furthermore, NPB is used by artists for sketches , because you don't have to erase NPB after ink .
Recently, NPB has also been used in digital scanning and image manipulation. The artist can do a design with NPB , ink over the sketch, and then scan. While most scanners will perceive the shade of blue, converting it to a grayscale image and increasing the contrast and brightness will eliminate the shade. The process varies depending on the scanner and settings, but the procedure remains the same. The difference between NPB and black ink is big enough that digital image manipulation can easily distinguish both colors , which in turn makes NPB future-proof.
Application forms
NPB can be found in the form of pencils or pencil leads (e.g. from Staedtler Mars or Sanford ). Depending on the specific application, other colors can also be involved.
Synonyms
- Copy not
- Non-print