#303 is a shimmery, pale pastel pink. All Make Up For Ever shadows that start with a 3 (e.g. #3_ _) are Diamond Eyeshadows. According to the brand, Diamond Eyeshadows is a combinatoin of their Diamond Powders and their regular Eyeshadows. No matter what you call it, they’re shimmery and iridescent. This is almost like a pink-meets-lilac color, but it runs a bit pastel and cool-toned with subtle silvery-pink shimmer.