A natural colorant was extracted from Acer ginnala, Alnus japonica and gromwell asextractants. Studies have been made on the effects of the kind of extracts anddyeing/mordanting conditions on colorimetric changes of ramie fabrics. The color of fabricstended to become darker as the numbers of dyeing process and mordanting processincreased using three kinds of extracts. As the numbers of dyeing and mordantingincreased, the ramie fabrics gradually increased to show reddish and bluish signs usingAcer ginnala, Alnus japonica, and gromwell extracts(500ml and 1,000ml). In the case of1,500ml of gromwell extracts, the ramie fabrics showed the color with more redness andyellowness. Color difference (⧍E) of dyed and mordanted fabrics increased as thenumbers of dyeing and mordanting processes increased. The apparent colors of ramiefabrics using Acer ginnala were Y and GY. The Alnus japonica extracts produced Y and GYcolors on ramie fabrics. With varying amount of gromwell extracts, the colors of dyed andmordanted fabrics were R, YR, GY, G, PB, P and RP, however, the main color was PB. Itwas concluded that the extracts of Acer ginnala, Alnus japonica and gromwell can be usedas a natural dye producing black colors.