Paints › Mr. Hobby › Dark Seagray BS381C 638 › vs Dark Grey RLM42Dark Seagray BS381C 638 vs Dark Grey RLM42
Brand Mr. Hobby Range Mr. Color Code C-331 Type an opaque base/layer paint Swatch #4d5761 (estimate)
Brand Vallejo Range Model Air Code 71.123 Type an opaque base/layer paint Swatch #474b51 (estimate) How close are they?
ΔE 5.7, very close: most people won’t see a difference side by side. Dark Grey RLM42 is a little darker than Dark Seagray BS381C 638.
Can I use Dark Grey RLM42 instead of Dark Seagray BS381C 638? Yes, for most jobs. Very close match (ΔE 6). Dark Grey RLM42 is a little darker than Dark Seagray BS381C 638.
Can I use Dark Seagray BS381C 638 instead of Dark Grey RLM42? The same difference applies the other way round: Dark Seagray BS381C 638 is a little lighter.
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 Dark Seagray BS381C 638 on the colour wheel See Dark Grey RLM42 on the colour wheel
Other Vallejo paints close to Dark Seagray BS381C 638 Other Mr. Hobby paints close to Dark Grey RLM42 All matches: Dark Seagray BS381C 638 equivalents · Dark Grey RLM42 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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