Canoptek Alloy vs Fae Wylds

How close are they?

ΔE 17.9, loose: different enough that you should pick on purpose. Fae Wylds is noticeably lighter, much more saturated, cooler than Canoptek Alloy.

Can I use Fae Wylds instead of Canoptek Alloy?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Fae Wylds is noticeably lighter, much more saturated, cooler than Canoptek Alloy.

Can I use Canoptek Alloy instead of Fae Wylds?

The same difference applies the other way round: Canoptek Alloy is noticeably darker, much more muted, 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.