DMC 823 to Cosmo: Thread Conversion

Cosmo 143 is a close match for DMC 823. At this very dark value, color differences between brands are partly masked by the depth of pigmentation, so the practical impact of the close rating is modest. The more noticeable difference with Cosmo is thread texture — their silkier finish can make very dark colors read slightly differently in person compared to DMC's matte surface. For nautical or night-sky designs where 823 covers large areas, doing a quick test swatch on your fabric will confirm whether Cosmo 143 reads acceptably alongside your other chosen colors.