Frostbite vs White Flesh

How close are they?

ΔE 18.9, loose: different enough that you should pick on purpose. White Flesh is a little darker, more saturated than Frostbite.

Can I use White Flesh instead of Frostbite?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). White Flesh is a little darker, more saturated than Frostbite.

Can I use Frostbite instead of White Flesh?

The same difference applies the other way round: Frostbite is a little lighter, more muted.

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.