 The study proposes using adhatoda vassica leaves extract as a potential source of natural dye for woollen yarn fibres, utilising premordanting technique with double metal salt and biomordant combinations to develop 63 shades of yellow-red colour in the colour space diagram. Gaulnut plus pomegranate peel extract, PPE, combination produced the highest colour strength values, while biomordants showed different behaviour compared to metal mordants in producing eco-friendly shades with excellent fastness properties. This article was authored by Lukman Jamil Rada, Shahid-Ul Islam, Maud Shabi, and others.