I bought a Blue (Sky Blue) dye but it looks emerald - green and not blue

[Abelc]

I bought a Blue (Sky Blue) dye but, once applied, it looks emerald - green and not blue. Is a water based dye. The brand is  Roapas Batic, is a japanese brand.

In a piece of paper looks blue. It is perhaps because the leather not being white, changes how color is perceived?

I used a scrap of leather i had around, and dyed it. I tried in another small scrap aplying fiebings dye-prep first, and happens the same.

Has this ever happened to you? Would there be a solution? I am going to try fiebings. It has never given me problems, using green, and brown, reddish-orange or similar.

Edited March 9, 2022 by Abelc

[Abelc]

Finally I will use another color of dye, but I will try cleaning before with oxalic acid (i will get it tomorrow), just to test, because anyway I want to have oxalic acid to prepare the leather before dyeing. And Anyway I prefer fiebings dyes (I use alcohol fiebing dye), to water based ones (i think water based ones are incompatible with resolene or tankote. That is what i have mostly used as finish)

[SaintJoy18]

Did you use the dye straight from the bottle or did you dilute it in any way? If you went without diluting your pigmentation will be higher and provide a different coloration than intended. There is also the, as you mentioned, the natural color of the leather that will change your final product.