Sepia Tone vs Targor Rageshade

How close are they?

ΔE 19.7, loose: different enough that you should pick on purpose. Targor Rageshade is much more muted, cooler than Sepia Tone.

Can I use Targor Rageshade instead of Sepia Tone?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 20). Targor Rageshade is much more muted, cooler than Sepia Tone.

Can I use Sepia Tone instead of Targor Rageshade?

The same difference applies the other way round: Sepia Tone is much more saturated, warmer.

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.