Paints › Mr. Hobby › RLM 66 Black Gray › vs 6K Russian BrownRLM 66 Black Gray vs 6K Russian Brown
Brand Mr. Hobby Range Mr. Color Code C-116 Type an opaque base/layer paint Swatch #393536 (estimate)
Brand Vallejo Range Model Air Code 71.282 Type an opaque base/layer paint Swatch #3e3a3a (estimate) How close are they?
ΔE 2.3, very close: most people won’t see a difference side by side. Our swatches for the two are almost the same.
Can I use 6K Russian Brown instead of RLM 66 Black Gray? Yes, for most jobs. Very close match (ΔE 2). The swatches are almost the same.
Can I use RLM 66 Black Gray instead of 6K Russian Brown? The same difference applies the other way round.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See RLM 66 Black Gray on the colour wheel See 6K Russian Brown on the colour wheel
Other Vallejo paints close to RLM 66 Black Gray Other Mr. Hobby paints close to 6K Russian Brown All matches: RLM 66 Black Gray equivalents · 6K Russian Brown equivalents
© 2026 AK Tabletop Studio. Swatch colours are estimates and will differ from the real paints; cross-brand matches are close, never exact.
Chart-listed matches come from the Two Thin Coats Paint Comparison Chart 2024, the Army Painter Warpaints Fanatic conversion chart, the AK 3rd Generation Acrylics equivalence table (2021) and the Herrick Games hobby paint comparison chart; the rest are a nearest-colour calculation.
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