Many many years ago, before we had anything other than clorox bleasch, I had hand washrd a pair of pale pink shorts and then a pair of new navy blue one. Being a teen and not knowing better, I laid both wet pair on ther counter while I did something else. Of course, the blue ran and caused a huge stain on the pink. Mom told me to add some Clorox to the water and rinse the pink shorts. All the blue came out, but the pink was okay. Did it once on a red and white cotton knit shirt , worked then too.