Skullcrusher Brass vs El Dorado

How close are they?

ΔE 25.9, loose: different enough that you should pick on purpose. El Dorado is noticeably lighter, much more saturated than Skullcrusher Brass.

Can I use El Dorado instead of Skullcrusher Brass?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 26). El Dorado is noticeably lighter, much more saturated than Skullcrusher Brass.

Can I use Skullcrusher Brass instead of El Dorado?

The same difference applies the other way round: Skullcrusher Brass is noticeably darker, 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.