The color indigo blue worn on the uniform of Colonel William Moultrie's soldiers and adopted as the background of the South Carolina State flag, is designated as the official color of the State of South Carolina.
S.C. Code Ann. § 1-1-710
Official State color
2008 Act No. 200, SECTION 1, eff April 16, 2008.
Official source: South Carolina Legislature. Reproduced from public-domain South Carolina statutes; confirm against the official source for the current text. Not legal advice.