DMC 334 to Cosmo: Thread Conversion

Cosmo 170 is a close match in the medium baby blue range. Baby blue equivalents across brands are generally well-aligned given their commercial importance in the birth-sampler market. The slight violet undertone that gives DMC 334 its periwinkle quality should be present in Cosmo 170, though it's worth verifying in person before using it in botanical contexts where the flower color must read as a specific blue. For sky and water fills, the close match is practically adequate.