Archive for September 24th, 2015

Navy Blue and Forest Green

September 24, 2015

A couple of years ago, there was an article in Spin-off Magazine about some extract dyes from a company in India; Sams’ Vegetable Dyes.  Two of them were said to be extracted from indigo.  The extraction method is proprietary but as oxalic acid is listed on the dyes; presumably it is similar to that used for saxon blue with sulfuric acid.

I experimented with the dyes on wool (10-12%) weight of goods.  The yarns are mordanted.  The smaller skeins at 10% wog potassium alum sulfate; the larger skeins with 20% potassium alum sulfate and 5 % cream of tartar.  The reason for the difference in mordanting is the subject of another post but the wools are different; test wool skeins versus cormo wool and require different mordanting strategies.

I did not add anything other than the dye to the pots.

Navy blue and forest green text wool skeins

Navy blue and forest green text wool skeins


Navy blue on cormo


Forest green on cormo (still wet) 12.5% wog


A comparison between the navy blue and caribbean ( the latter was painted so a bit light).