Diamine Blue Edition is a series of ink introduced in Diamine's 2019 Inkvent calendar -- an ink sample advent calendar with total of 25 samples. In 2020, Diamine decided to release the 25 colors as regular colors.
- Midnight Hour
- Available in Blue Peppermint, Elf, Festive Cheer, Gingerbread, Gold Star, Holly, Jack Frost, Midnight Hour, Noel, Nutcracker, Polar Glow, Roasted Chestnut, Seasons Greetings, Snow Storm, Solstice, Triple Chocolate, Winter Miracle, Candy Cane, Fire Ember, Happy Holidays, Ho Ho Ho, Mistletoe, Mulled Wine, Poinsettia, Purple Bow
- Available as Ink Sample - Diamine Blue Edition