What is the difference between Neutral Gray (USAF) and Light Blue RLM78?

ΔE 6 (close). Swatch colours are estimates.

Neutral Gray (USAF) vs Light Blue RLM78

Neutral Gray (USAF)

Brand: Tamiya
Range: AS Spray (aircraft)
Code: AS-7
Type: an opaque base/layer paint
Swatch: #839299 (estimate)

Light Blue RLM78

Brand: Vallejo
Range: Model Air
Code: 71.101
Type: an opaque base/layer paint
Swatch: #759090 (estimate)

How close are they?

ΔE 6.4, close: similar, with a visible difference side by side. Our swatches for the two are almost the same.

Can I use Light Blue RLM78 instead of Neutral Gray (USAF)?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). The swatches are almost the same.

Can I use Neutral Gray (USAF) instead of Light Blue RLM78?

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 Neutral Gray (USAF) on the colour wheel See Light Blue RLM78 on the colour wheel

Other Vallejo paints close to Neutral Gray (USAF)

Neutral Gray (USAF) vs Dark Ghost Gray (71.120)Model Air · ΔE 2, very close · closer than Light Blue RLM78
Neutral Gray (USAF) vs Pale Blue Grey (71.046)Model Air · ΔE 2, very close · closer than Light Blue RLM78
Neutral Gray (USAF) vs Light Gray (71.050)Model Air · ΔE 3, very close · closer than Light Blue RLM78

Other Tamiya paints close to Light Blue RLM78

Light Blue RLM78 vs Light Sea Gray (XF-25)XF Flat Acrylic · ΔE 7, close
Light Blue RLM78 vs Gunship Gray 2 (AS-27)AS Spray (aircraft) · ΔE 7, close
Light Blue RLM78 vs Medium Gray (AS-28)AS Spray (aircraft) · ΔE 7, close

All matches: Neutral Gray (USAF) equivalents · Light Blue RLM78 equivalents