To obtain a dyed mixed fiber article of fibers dyeable with a disperse dye with polyurethane fibers having excellent color developing properties and color fastness.

This dyed mixed fiber article of the fibers dyeable with the disperse dye with the polyurethane fibers is obtained by mixing the fibers dyeable with the disperse dye with the polyurethane fibers and then dyeing the resultant mixed fiber article. The dyed mixed fiber article has a color fastness to a perspiration-alkali of grade 3 or higher according to the JIS L-0848 and a surface color shade without exceeding 20 at the most in terms of L value determined by a spectro-colorimetry. The mixed fiber article is dyed with the disperse dye selected from the group of the disperse dyes including benzeneazo disperse dyes.