Blue-Black Fountain Pen Inks

Vinta Inks Dugong Bughaw 1521 (Blue Blood)

Van Dieman's Night - Shooting Star

Diamine Shimmer Ink - Arctic Blue

Diamine Shimmer Ink - Enchanted Ocean

Noodler's Squeteague Ink

De Atramentis Document Ink - Dark Blue

Dominant Industry Fountain Pen Ink - Dominant Blue

Diamine 150th Anniversary Ink - Tudor Blue

J. Herbin 'D' Bottled Ink - Bleu Myosotis (Forget me Not)

Parker Quink Ink Bottle - Permanent Blue

Wearingeul Fountain Pen Ink - The Phantom of the Opera (Gaston Leroux)

Van Dieman's Underwater - Twilight Zone

Noodler's Bad Belted Kingfisher Bulletproof Ink

TWSBI Ink - Blue/Black 70ml

Diamine Inkvent Blue Edition Ink - Festive Cheer

Pelikan 4001 Fountain Pen Ink - Royal Blue

Diamine Shimmer Ink - Shimmering Seas

Pilot Iroshizuku Fountain Pen Ink - Shin-Kai (Deep Sea)

Endless Alchemy Fountain Pen Ink - Candy Sea & Toffee

Dominant Industry Fountain Pen Ink - Milky Way Blue

Van Dieman's Underwater - Ghost Ship

Colorverse eXtreme Deep Field & NGC 1850 Ink (No. 86 & 87)

TWSBI Ink - Midnight Blue 70ml

Colorverse Ham #65 Glistening Ink

Sailor Shikiori Dye Ink - Yonaga - 20ml

Pelikan Edelstein Ink - Sapphire

Pelikan Edelstein Ink - Topaz

Troublemaker Inks - Blue Guitar

Noodler's Q'Eternity Ink

Kaweco Bottled Ink 50ml - Midnight Blue

Pelikan Edelstein Ink - Tanzanite

Sailor Pigment 50ml Ink - Seiboku

Rohrer & Klingner Fountain Pen Ink - Royal Blue No. 440

Sailor Manyo Bottled Ink - Kikyou

Kaweco Bottled Ink 50ml - Royal Blue

Sailor Pigment 50ml Ink - Souboku

Colorverse Schrödinger & Cat Ink (No. 21 & 22)

Vinta Inks Saysay 1925 (Mystical Eve)

J. Herbin 'D' Bottled Ink - Bleu Nuit (Night Blue)

Wearingeul Fountain Pen Ink - The Sky, Seasons Passing By

Vinta Inks Kosmos 1955 (Cosmic Blue)

Endless Alchemy Fountain Pen Ink - Raven Blue

Sailor Shikiori Dye Ink - Shimoyo - 20ml

J. Herbin '1670' Fountain Pen Ink - Bleu Ocean

Diamine Shimmer Ink - Starlit Sea

KWZ Azure #5 Ink

Colorverse Quasar Ink (No. 13)

Diamine Shimmer Ink - Blue Flame

Colorverse Extra Dimension & Warped Passages Ink (No. 27 & 28)

Endless Alchemy Fountain Pen Ink - Candy Sea