How can I get a royal blue color with a mix of naphthol bases?

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Asim Kumar Roy Choudhury's

Textile Preparation And Dyeing

Country or region: India

Message: How to get royal blue color (as of Chelpark royal blue ink) in batik, am asking for a mix of naphthol base or any other manner?

I need to make a batik with peacock blue, cobalt blue and scarlet. Waxing is no problem but it's the color, all need to go on white base and availability of colors in New Delhi is also in question. pls help

Because we do not use naphthol dyes for hand dyeing in my country, due to the dangers of using some of the dye components, I'm afraid that I have no personal experience to offer. 

Blue is supposed to be obtainable by mixing Naphthol Base AS-LB (Colour Index Azoic Coupling Compound 15) with Fast Blue B diazonium salt; see the chart on the page "About Naphthol Dyes". Note that Fast Blue B diazonium salt is significantly hazardous to work with, because not only is it very toxic and suspected of causing cancer, unlike most dyes it can be absorbed directly through unbroken skin. Never use naphthol dye components without a very high degree of protective materials. You must not get even a drop of any of these chemicals on your skin. Other classes of dyes are much safer for the user.

A good source for detailed information on the use of naphthol dyes is the book Textile Preparation and Dyeing, by Asim Kumar Roy Choudhury.

For other classes of dye, it is typical to use a cyan-colored dye as a mixing primary, combining it with no more than a tiny amount of magenta to make a peacock blue, and using a larger proportion of the magenta, though still much less than of the cyan, to make a royal blue. Since the color scarlet contains some yellow, it cannot be used in batik with royal blue unless direct dye application is used, allowing colors to be placed on different parts of the design, instead of immersing the entire piece in both scarlet and royal blue at different times (which would result in a brownish purple where they overlap). Direct dye application works very well in combination with batik if you use a cool-water fiber reactive dye, such as Procion MX dye or Drimarene K dye. See "About Fiber Reactive Dyes"

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