ΔE 21.3, loose: different enough that you should pick on purpose. Titan Green Pale is noticeably lighter, more muted, cooler than Light Imperial Khaki.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 21). Titan Green Pale is noticeably lighter, more muted, cooler than Light Imperial Khaki.
The same difference applies the other way round: Light Imperial Khaki 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 Light Imperial Khaki on the colour wheel See Titan Green Pale on the colour wheel
All matches: Light Imperial Khaki equivalents · Titan Green Pale equivalents