TWSBI Eco Fountain Pen - Indigo Blue with Bronze

An Eco with a slightly dressier feel

The TWSBI Eco Indigo Blue with Bronze takes the standard Eco demonstrator and gives it a more composed finish. The deep blue resin sits somewhere between navy and ink blue, while the bronze trim softens the overall look and stops it feeling cold. Still the same reliable piston filler underneath, just with a colour way that feels more settled and intentional.

What sets it apart

• Deep indigo blue paired with warm bronze trim
• Reliable piston filler with high ink capacity
• Smooth steel nib with free tuning before dispatch
• Crystal clear barrel lets you track ink level and movement
• A darker demonstrator that still feels approachable

Feel in the hand

The Indigo Blue with Bronze feels calm and dependable. The darker blue gives it a more serious tone, while the bronze trim adds a little warmth and softness around the edges.

Who it’s for

• Writers who prefer darker, more refined colour palettes
• Everyday users who want reliability and capacity
• People who like subtle contrast and warm metal finishes
• Blue ink users looking for easy ink pairing
• Anyone wanting a demonstrator that feels a bit more grown up

Not for

• Users who prefer bright or highly saturated colours
• Those who want cartridge or converter convenience
• Writers looking for a heavy, metal bodied pen
• Anyone who prefers fully opaque pens

Practical tips

• Try brown or sepia inks if you want to bring out more warmth from the bronze trim. Blue-blacks make it feel cleaner and more formal.

FAQs

Is the Indigo Blue fully transparent?
It is a clear demonstrator with an opaque cap and piston knob

Does it use cartridges or converters?
No, it uses a built in piston filling system

Is it suitable for beginners?
Yes, it is one of the most beginner friendly piston fillers available

Can it handle document and shimmer inks?
Yes, with regular cleaning recommended

What nib does it use?
TWSBI stainless steel nib, plated in a bronze colour finish

What’s included

• TWSBI Eco Indigo Blue with Bronze Fountain Pen
• Wrench for mechanism disassembly
• Silicone grease
• Simple pen box
• Instruction leaflet
• Free nib tuning by LarryPOST

Ink pairing suggestions

• Blue-black or navy inks for the professional look
• Sepia inks to pair with the bronze trim
• Purple inks for added 'royal' character

Build you practice

• Explore more Eco limited edition colours
• Add a Diamond 580ALR if you want a heavier everyday writer
• Pair with Rhodia or Midori to show ink properly

Specifications

• Brand: TWSBI
• Brand series: Eco (plated)
• Launch: Aug 2023
• Origin: Taiwan
• Nib: Stainless steel
• Nib sizes: EF, F, M, B, 1.1mm stub
• Filling system: Piston filler (1.8mL)
• Body: Transparent polycarbonate
• Trim: Bronze coated steel
• Cap: Twist
• Grip: approx. 10mm
• Diametre: approx. 13mm
• Length: approx. 139mm (capped)
• Weight: approx. 21g (capped)
• Comparable size: Lamy Safari, Pilot Metropolitan

One of the more understated Eco colour ways, with a darker mood that works well every day.