Tables 1–3 show the color values of the silk fabric dyed withmangrove bark extract dye solution. The K/S values increased withan increase of dye concentration. The mordant activity sequencefor the pre-mordanting method was CuSO4> FeSO4> withoutmordant > AlK(SO4)2> SnCl2and CuSO4> without mor-dant > FeSO4> AlK(SO4)2> SnCl2for the meta-mordanting. Inthe post-mordanting, CuSO4> FeSO4> AlK(SO4)2> SnCl2> withoutmordant was observed. In all cases, the copper sulfate mordantyielded the best dyeing results.