In the pot, Imperium Blue reads as a cool blue, dark and vivid. No shortage of substitutes here, Ultramarine from Monument Pro Acryl matches at 87 percent and 3 brands carry a strong same-finish near-match. For modelling, drop to Lapislazuli in the recesses and step up to Marine Blue on the edges, both Green Stuff World paints. Treat it as an easy swap, just confirm the finish type matches before you commit.
Imperium Blue equivalents and near misses
Fair warning: nothing matches Green Stuff World Imperium Blue cleanly. The options below are the least bad, and every one of them drifts.
Closest Monument Pro Acryl equivalent: Monument Pro Acryl Ultramarine, close, with a hint of drift side by side (delta E 2.6).
Best Revell option: Revell Blue/Blau (RAL 5005), a near match with visible drift up close (delta E 3.0).
From AK Interactive: AK Interactive Ultramarine, close, with a hint of drift side by side (delta E 3.5).
Tamiya's closest color: Tamiya Flat Blue, workable at tabletop distance, not up close (delta E 4.2).
The honest caveat: Monument Pro Acryl Ultramarine dries slightly more muted and warmer than Imperium Blue, so expect recess shading and edge highlights to shift with it.
How to read the score
90+Close
80sUsable
<70Mix
Monument Pro Acryl
Revell
AK Interactive
Tamiya
Humbrol
Vallejo
The Army Painter
Citadel
P3 Paints
About this color
Color profile
Highlight and shade ladder
Pairs well with
Try any paint in the scheme toolMatch difficulty
Found in 3 other brands with a same-finish match.
Where painters use it
Frequently asked
What is the closest equivalent to Green Stuff World Imperium Blue?
The closest same-finish match is Monument Pro Acryl Ultramarine at 87% color similarity.
What color is Imperium Blue?
Imperium Blue is a dark vivid blue with a cool undertone (hex #1A2E85).
What do I highlight and shade Imperium Blue with?
Highlight Imperium Blue toward Marine Blue and shade it down into Lapislazuli, both Green Stuff World paints in the same finish family.