ΔE 22.1, loose: different enough that you should pick on purpose. Titan Green Pale is noticeably lighter, more muted, cooler than Ionrach Skin.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 22). Titan Green Pale is noticeably lighter, more muted, cooler than Ionrach Skin.
The same difference applies the other way round: Ionrach Skin is noticeably darker, 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.
See Ionrach Skin on the colour wheel See Titan Green Pale on the colour wheel
All matches: Ionrach Skin equivalents · Titan Green Pale equivalents