Ionrach Skin vs Light Orange

How close are they?

ΔE 17.1, loose: different enough that you should pick on purpose. Light Orange is noticeably lighter, more saturated than Ionrach Skin.

Can I use Light Orange instead of Ionrach Skin?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Light Orange is noticeably lighter, more saturated than Ionrach Skin.

Can I use Ionrach Skin instead of Light Orange?

The same difference applies the other way round: Ionrach Skin is noticeably darker, more muted.

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.