Looking for a perfume similar to Calvin Klein Ck One Summer 2021? Below are 12 fragrances from our database of 24,000+ designer and niche scents that share its aquatic, citrus, fruity profile with prominent watery notes, grapefruit, lemon notes. We score similarity by shared accords and notes — rare ingredients count more than common ones — so the matches you see are the ones that genuinely smell closest.