Altdorf Guard Blue is a dark moderate blue with a cool undertone. For modelling, drop to Macragge Blue in the recesses and step up to Eidolon Purple Clear on the edges, both Citadel paints. Substitutes are thinner on the ground; The Army Painter Ultramarine Blue is the nearest same-finish option at 82 percent, with 2 brands in strong-match range. Cross-brand swaps are adjust-on-model territory here, useful as a starting point rather than an exact replacement.
Altdorf Guard Blue equivalents in other ranges
Altdorf Guard Blue is awkward to replace. Treat the matches below as starting points for a mix rather than straight swaps.
Closest The Army Painter equivalent: The Army Painter Ultramarine Blue, a near match with visible drift up close (delta E 3.6).
From AK Interactive: AK Interactive Fluorescent Blue, close, with a hint of drift side by side (delta E 3.9).
Vallejo's closest color: Vallejo Royal Blue, workable at tabletop distance, not up close (delta E 4.7).
Nearest in the Green Stuff World catalog: Green Stuff World Marine Blue, a usable stand-in rather than a twin (delta E 5.4).
Worth knowing before you swap: The Army Painter Ultramarine Blue runs clearly more muted and warmer, which shows most where the paint thins over raised detail.
How to read the score
90+Close
80sUsable
<70Mix
The Army Painter
AK Interactive
Vallejo
Green Stuff World
Revell
Monument Pro Acryl
Humbrol
Scale75
Tamiya
Two Thin Coats
P3 Paints
About this color
Color profile
Highlight and shade ladder
Pairs well with
Try any paint in the scheme toolMatch difficulty
Found in 2 other brands with a same-finish match.
Where painters use it
Frequently asked
What is the closest equivalent to Citadel Altdorf Guard Blue?
The closest same-finish match is The Army Painter Ultramarine Blue at 82% color similarity.
What color is Altdorf Guard Blue?
Altdorf Guard Blue is a dark moderate blue with a cool undertone (hex #2D4696).
What do I highlight and shade Altdorf Guard Blue with?
Highlight Altdorf Guard Blue toward Eidolon Purple Clear and shade it down into Macragge Blue, both Citadel paints in the same finish family.