Passmark

Choosing navy or black stamp ink

UPDATED 24.10.2026 · 2 MIN

You choose the stamp ink when you build a pack, and again when you download seal stamps and labels.

The choice

  • Navy: colour print.
  • Black: photocopy and fax safe. Also the right choice for thermal printers.

Whichever you pick

The stamp carries the seal ID and a QR code to the check page. Print it at 100% scale on white or unbleached stock, and never reverse it out of a dark background.

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