ΔE 16.3, loose: different enough that you should pick on purpose. Raw Sienna is much more saturated than Snakebite Leather. They are different kinds of paint: Citadel Snakebite Leather is a one-coat contrast-style paint and Golden Raw Sienna is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Raw Sienna is much more saturated than Snakebite Leather. They are different kinds of paint.
The same difference applies the other way round: Snakebite Leather is much 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.
See Snakebite Leather on the colour wheel See Raw Sienna on the colour wheel
All matches: Snakebite Leather equivalents · Raw Sienna equivalents