Fyreslayer Flesh vs Misted Yellow

How close are they?

ΔE 23.7, loose: different enough that you should pick on purpose. Misted Yellow is a little darker, cooler than Fyreslayer Flesh.

Can I use Misted Yellow instead of Fyreslayer Flesh?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 24). Misted Yellow is a little darker, cooler than Fyreslayer Flesh.

Can I use Fyreslayer Flesh instead of Misted Yellow?

The same difference applies the other way round: Fyreslayer Flesh is a little lighter, 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.