Ruddy Fur vs Chameleon Orange

How close are they?

ΔE 18.2, loose: different enough that you should pick on purpose. Chameleon Orange is more saturated, cooler than Ruddy Fur.

Can I use Chameleon Orange instead of Ruddy Fur?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Chameleon Orange is more saturated, cooler than Ruddy Fur.

Can I use Ruddy Fur instead of Chameleon Orange?

The same difference applies the other way round: Ruddy Fur is 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.