Archaeologists from the University of Tartu have discovered that textiles worn during the early medieval period in Estonia were predominantly "blackish-blue" in colour. The popular blue hue was achieved by using imported compounds and the dark-purple shade was added to it through a mixing of native plants. The majority of medieval clothing found in Estonia comes from women's burial sites.
Artefacts found in Estonia from the 11th up until the 15th century reveal that the blackish blue was a fashionable colour during that period and it was certainly the most popular colour worn for festive occasions.