Quick answer: No law fixes the ink colour of a Company stamp. Blue and violet are the most common in India because they stand out from black printed text, which makes an original document easy to tell apart from a photocopy. Black is accepted too. Whichever colour you choose, keep it the same across all your stamps.
Blue, violet and black compared
| Colour | Pros | Watch out for |
|---|---|---|
| Blue | Most widely used; clearly an original on printed documents | Very light blues can scan faintly |
| Violet | Traditional office colour in India; distinct on forms | Less common in newer offices |
| Black | Scans and photocopies sharply | Harder to tell an original from a copy |
| Red | Good for "Paid" or "Received" stamps | Not used for Company signature stamps |
Does the bank care about stamp colour?
Banks generally care that the stamp is legible and matches the specimen given at account opening. Using the same stamp and colour every time avoids questions on cheques and forms.
Should the stamp match my signature ink?
Not necessarily. Many people sign in blue and stamp in blue or violet. What matters is that the signature stays readable over the impression, so avoid very dark ink with a dark pen.
Can I change the colour later?
Not in the same Pre-Inked Stamp. Mixing ink colours gives muddy impressions. Order a new stamp if you want a different colour. See How to Refill and Care for a Pre-Inked Stamp.
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Frequently asked questions
Is blue ink compulsory for official documents?
No law requires it, but blue is the most common choice because it distinguishes originals from photocopies.
Which colour do CAs and CSs use?
Blue and violet are most common for certifications. See our CA and CS stamp format guides.
Does a black stamp look unprofessional?
No. Black is accepted everywhere; it just makes originals harder to distinguish from copies.
Should all my Company stamps use the same colour?
Yes. Consistency makes your documents easier to verify.