Wyrmling Red vs Bright Coral

How close are they?

ΔE 17.0, loose: different enough that you should pick on purpose. Bright Coral is more saturated, warmer than Wyrmling Red.

Can I use Bright Coral instead of Wyrmling Red?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Bright Coral is more saturated, warmer than Wyrmling Red.

Can I use Wyrmling Red instead of Bright Coral?

The same difference applies the other way round: Wyrmling Red is more muted, cooler.

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.