Lava Orange vs Marigold Yellow

How close are they?

ΔE 22.5, loose: different enough that you should pick on purpose. Marigold Yellow is a little lighter, much more muted, cooler than Lava Orange.

Can I use Marigold Yellow instead of Lava Orange?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 23). Marigold Yellow is a little lighter, much more muted, cooler than Lava Orange.

Can I use Lava Orange instead of Marigold Yellow?

The same difference applies the other way round: Lava Orange is a little darker, 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.