DIYbanter - View Single Post - O.T. How to mix yellow, cyan, magenta refill ink to get black/brown?

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hr(bob) wrote:
I have a lot of extra yellow, cyan, and magenta ink left over from
refilling inkjet cartridges. Any idea of the proportions of each I
should mix to get brown/black ink?

I've done fabric dyeing using similar base colors but I'm sure the
pigments are different. In my color samples, I have a nice reddish
brown that uses 1 part yellow, 7 parts cyan and 12 parts magenta.

With ink, I'd start with a few drops of yellow, add magenta a drop at a
time to get a medium orange, and then try adding the cyan. Count drops
for each and then multiply.