In the suffragette color scheme for International Women’s Day, purple symbolizes dignity.
The familiar British suffragette palette combined purple, white, and green. Purple represented dignity, white stood for purity, and green symbolized hope. The colors were associated with the Women’s Social and Political Union, founded in Britain in 1903 and led by Emmeline Pankhurst and her supporters.
Purple is sometimes described in broader modern campaigns as a color of justice, solidarity, or women’s equality. Those meanings can be valid in contemporary branding, but the traditional suffragette interpretation asked by this question is dignity. The scheme also appeared on banners, sashes, badges, and clothing, helping turn political demands into a highly recognizable public identity.
The color symbolism belongs especially to the British suffrage movement, so it should not be confused with every color scheme later adopted for International Women’s Day worldwide.