Have you ever wondered why we write mostly in two ink colors? Generally all we see is blue and black. Have you ever wondered why? We all know in school, by the time you are finally allowed to write with a pen, you are specifically told not to use any other color. You could not even think about using green, purple, pink, or heaven-forbid, red pens. The penalty was death. No really, the teachers only caned us.
Every now and then you may see the principal or teacher use a green pen to write some kind of note or sign a hall pass. Green seemed pretty exotic at the time, with all the dull black and blue we were used to using.
Obviously a student writing in red ink, the same color used to grade in, could lead to confusion. It seems green, purple and possibly brown would be perfectly fine to use. However, schools have a certain duty. They are to train you to follow rules in the real world; even ones you may not understand. So let's just use that as the reason, for not using other ink colors in school, for the sake of argument.
I did have some green ink refills I was using. I got a little worried someone may borrow my pen and get mad, because they ruined a check leaf or something. So I quickly resorted back to the old faithful blue ink promotional pens.
Why do we have the restrictions in real life? I filled out a form the other day, which indicated I could only use blue ink. In my various forays into the real world, corporate or otherwise, I can't recall a single time that I've seen a from that indicated I could only use green or purple ink. I never even seen it used on something in the real world.
Maybe we could make a case for red ink pens and say that is associated with danger. Maybe, people don't want to be reminded of fire trucks and traffic lights on their checks. I can certainly understand that pinks and yellows could be difficult to read, especially on white paper. However, brown, purple, green, maroon - they're all colors that are easy to read. So what gives?
I did a bit of research and it turns out there are some legitimate reasons. Actually, they probably apply to both schools and the real world. It turns out that blue ink promotional pens are preferable on legal documents, since it has the best contrast with black print. Also, some colors do not copy or scan well. As far as an actual signature, it turns out blue ink is preferred, so it easy to determine which is the original and which is a copy. So if the document says "sign in blue ink" and the signature is black, like the rest of the document, you know that is a copy.
Turns out there is a lot of discussions on blue ink promotional pens and black ink pens and what is best for what. There are many different answers, but no definitive. I suppose black and blue ink the best all around colors, that work for most situations.
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