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Robert Oster

Great Southern Ocean

Blues & navies✨ Sheen
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An Australian ink maker known for saturated, often sheening colors and frequent small-batch releases.

Specs

Color familyBlues & navies
Approx. hex#1E5E8E
SheenYes
BrandRobert Oster
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About Robert Oster

An Australian ink maker known for saturated, frequently sheening small-batch colors.

Australia Founded c. 2014
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Paper & pairing notes

Blues and navies are the most broadly "safe" fountain pen colors — legible, professional, and unlikely to raise eyebrows in an office. Sheening inks need the right conditions to show off — a wetter nib and a coated, less-absorbent paper (Tomoe River and similar sheets are the community standard) let the ink pool slightly and separate into its second color as it dries. On cheaper, more absorbent paper the sheen effect will mostly disappear.

Storing and using the bottle

Bottled fountain pen ink has an effectively long shelf life when kept capped and out of direct sunlight — most inks remain usable for years. The main risk isn't the ink spoiling, it's a pen sitting inked and unused for weeks: that's what causes clogs, not the ink's age.

Frequently asked questions

What color family is Great Southern Ocean?
Great Southern Ocean falls into Inktend's blues & navies family based on its typical swatch color.
Does Great Southern Ocean have sheen?
Yes — Great Southern Ocean is known for sheen, most visible with a wetter nib on coated, low-absorbency paper.
How should I store a bottle of Great Southern Ocean?
Bottled fountain pen ink has an effectively long shelf life when kept capped and out of direct sunlight — most inks remain usable for years. The main risk isn't the ink spoiling, it's a pen sitting inked and unused for weeks: that's what causes clogs, not the ink's age.
What paper works best with Great Southern Ocean?
Blues and navies are the most broadly "safe" fountain pen colors — legible, professional, and unlikely to raise eyebrows in an office. Sheening inks need the right conditions to show off — a wetter nib and a coated, less-absorbent paper (Tomoe River and similar sheets are the community standard) let the ink pool slightly and separate into its second color as it dries. On cheaper, more absorbent paper the sheen effect will mostly disappear.

Similar shades

Crystal Azurite
Lamy
Majestic Blue
Diamine
Magnetic Blue
Caran d'Ache
Walden Pond Blue
Organics Studio
Bluegrass Velvet
Ferris Wheel Press
Sydney Darling Harbour
Robert Oster

Color shown is a close digital approximation of a typical swatch, not a calibrated color match.