Matching it is straightforward: Two Thin Coats Wizard Grey lands at 96 percent in the same finish, and 4 brands in all carry a close same-finish swap. Color-wise this is a muted, mid-tone grey leaning neutral. It builds a smooth gradient with Warpfiend Grey underneath and Baneblade Brown on the highlights, all in the Citadel line. Treat it as an easy swap, just confirm the finish type matches before you commit.
Air Caste Thinner equivalents across other brands
The short answer: yes, Air Caste Thinner has a true equivalent. If the pot runs dry mid project, here is the closest color each brand offers.
Closest Two Thin Coats equivalent: Two Thin Coats Wizard Grey, indistinguishable once dry (delta E 0.8).
- Nearest in the AK Interactive catalog: AK Interactive Rlm 75, a swap nobody spots at arm's length (delta E 1.2).
- Best Vallejo option: Vallejo Dark Sea Grey, close enough that batch variation matters more (delta E 1.2).
- From Revell: Revell Mouse grey/Mausgrau (RAL 7005), close, with a hint of drift side by side (delta E 2.9).
- Tamiya's closest color: Tamiya JN Grey, workable at tabletop distance, not up close (delta E 4.8).
- Nearest in the Humbrol catalog: Humbrol Dk Gull Grey, a usable stand-in rather than a twin (delta E 5.4).
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
Two Thin Coats
AK Interactive
Rlm 75
Have Glass Grey Fs 36170
Intermediate Blue
Graphite
Raf Dark Sea Grey Bs381C/638
Neutral Grey 43
Grey Blue
Raf Ocean Grey
Raf Dark Camouflage Grey Bs381C/629
English Grey
F-15 Dark Grey (Mod Eagle) Fs 36176
Vallejo
Revell
Tamiya
Humbrol
Monument Pro Acryl
The Army Painter
Scale75
Green Stuff World
P3 Paints
About this color
Color profile
Highlight and shade ladder
Match difficulty
Found in 4 other brands with a same-finish match.
Where painters use it
Frequently asked
What is the closest equivalent to Citadel Air Caste Thinner?
The closest same-finish match is Two Thin Coats Wizard Grey at 96% color similarity.
Is there a Vallejo equivalent of Air Caste Thinner?
Yes. The closest Vallejo option is Dark Sea Grey at 94%, a same-finish match.
What color is Air Caste Thinner?
Air Caste Thinner is a mid-tone muted grey with a neutral cast (hex #6B6B6B).
What do I highlight and shade Air Caste Thinner with?
Highlight Air Caste Thinner toward Baneblade Brown and shade it down into Warpfiend Grey, both Citadel paints in the same finish family.