Approximate screen color · source authority unverified
Treat this hex as approximate until it is checked against a physical sample.
Protopasta
Composite Iron Gray
PLA · matte
Color values and print settings
- Hex
- #6D6E70
- RGB
- 109, 110, 112
- HSL
- 220°, 1%, 43%
- CIELAB
- 46.41, 0.03, -1.25
- Diameter
- 1.75 mm · 2.85 mm
- Nozzle
- 195–215 °C
- Bed
- 55–65 °C
Where to buy
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Protopasta’s own store hasn’t listed this colour since Sep 29, 2026. It may be out of stock until a restock. We check the store several times a day.
Amazon
Opens a related Amazon listing for Steel Composite. Composite Iron Gray has not been matched; check the available options there.
Closest alternatives from other spools
Ranked by how close each one looks to #6D6E70, measured perceptually. Useful when this color is out of stock or you print in a different material.
Protopasta
Gray
Iron Metal Composite PLA · PLA
Matching screen color100% matchΔE 0.03D-Fuel
Castle Gray
PLA+
Matching screen color100% matchΔE 0.73DPower
Grey
Select PETG · PETG
Excellent match99% matchΔE 1.03DPower
Silver
Select PETG · PETG
Excellent match99% matchΔE 1.03DXTECH
Dark Grey
ABS 3DXTech · ABS
Excellent match99% matchΔE 1.03DXTECH
FIBREX™ Nylon +GF30 Dark Grey
PA6 GF · Nylon
Excellent match99% matchΔE 1.0