No shortage of substitutes here, Grey from Humbrol matches at 97 percent and 5 brands carry a strong same-finish near-match. Color-wise this is a muted, light grey leaning neutral. For modelling, drop to Voltaic Blue in the recesses and step up to Sickly Skin on the edges, both P3 Paints paints. In practice you can substitute across brands here without anyone noticing at arm's length.
Underbelly Blue equivalents across other brands
The short answer: yes, Underbelly Blue has a true equivalent. If the pot runs dry mid project, here is the closest color each brand offers.
Closest Humbrol equivalent: Humbrol Grey, indistinguishable once dry (delta E 0.7).
- Nearest in the Tamiya catalog: Tamiya IJN Grey, a swap nobody spots at arm's length (delta E 2.0).
- Best Revell option: Revell Light Grey (USAF), a near match with visible drift up close (delta E 3.0).
- From AK Interactive: AK Interactive Raf Camouflage (Barley) Grey Bs381C/626, close, with a hint of drift side by side (delta E 3.3).
- Citadel's closest color: Citadel Administratum Grey, a near match with visible drift up close (delta E 3.9).
- Nearest in the Vallejo catalog: Vallejo Light Green Blue, a usable stand-in rather than a twin (delta E 4.8).
We checked the Lab numbers for a hidden catch and there is none: lightness and temperature both line up, so this swap is as safe as they come.
How to read the score
90+Close
80sUsable
<70Mix
Humbrol
Tamiya
Revell
AK Interactive
Raf Camouflage (Barley) Grey Bs381C/626
Dark Ghost Grey Fs 36320
Rlm 78 (1941)
Pale Grey
Rlm 78 (1942)
Light Ghost Grey Fs 36375
Ijn J3 Hai-iro (Grey)
Rlm 65 (1941)
Sky Grey Fs 36463
Citadel
Vallejo
Green Stuff World
Two Thin Coats
The Army Painter
Monument Pro Acryl
Scale75
About this color
Color profile
Highlight and shade ladder
Match difficulty
Where painters use it
Frequently asked
What is the closest equivalent to P3 Paints Underbelly Blue?
The closest same-finish match is Humbrol Grey at 97% color similarity.
Is there a Citadel equivalent of Underbelly Blue?
Yes. The closest Citadel option is Administratum Grey at 80%, a same-finish match.
What color is Underbelly Blue?
Underbelly Blue is a light muted grey with a neutral cast (hex #899495).
What do I highlight and shade Underbelly Blue with?
Highlight Underbelly Blue toward Sickly Skin and shade it down into Voltaic Blue, both P3 Paints paints in the same finish family.