Choosing Thread Colors for Dark Garments
https://wiki-view.win/index.php/A_buyer%27s_checklist_for_ordering_patches_for_a_small_brand
Black hoodies, navy polos and charcoal caps are some of the most popular blanks for embroidery, and also some of the trickiest. Colors that look vivid on a white screen can turn muddy against a dark fabric, and fine details can vanish completely