Two navies for you today. Anyone who's not a nail polish enthusiast would most likely regard these two as dupes, however there are differences between them.
Essie After School Boy Blazer is a dark, inky navy with a cream finish. It's superbly pigmented, though thicker than other Essies I own. One coat is enough for full opacity, however, I apply two on nails where the first coat is uneven.
Maybelline Colorama 103 is another navy, but one that is leaning slightly to purple and has a frosty finish. It's less vibrant than most navies I've seen due to a grey hue. The pigmentation is much weaker than Essie ASBB's. The first coat is sheer and it needs two or even three coats for full opacity.
Maybelline Colorama 103 :
Maybelline 103 is lighter than Essie, however, from far away, the two look very close. I also don't notice a difference in how long they last, but then all nail polishes last super long on me. I believe Essie's ASBB was a limited edition, but if you still find one, I'd highly recommend it as the formula and the colour are amazing. You might like Maybelline more if you're looking for something that doesn't look almost black.
Essie After School Boy Blazer and Maybelline Colorama 103 on the ring finger.
Have a great day!