Ashford Rainbow Collection contains three primary colors: Scarlet, yellow and blue. 

These acid dyes are for animal fibre - wool, silk, alpaca, mohair etc. They will also dye nylon. They are very concentrated, so you need only a small amount. The primary colors may be blended to make many more colors. Each jar contains 10 grams of dye powder. Instructions are included.  This kit gives you enough dye to experiment with the dyeing process.  All you need is a dye pot, fibre or yarn and some vinegar. 

From the makers of fine spinning equipment.