Light Line/Dark Line

Amanda 🐼 • With my husband for 25 years, married 15 💍 Postpartum/Newborn RN 💉 Addison Sarah born 1/1/16 🎀 Skylar Melina born 12/2/23 🩷
Just a quick question. Does it matter if the line on an ovulation test is very light? Or is it as long as it shows up, it's a positive? I'm pretty sure a BFP on a pregnancy test is any line that shows up, but I don't know if it's the same for opk