ΔE 12.5, fair: the same colour family, but not a straight swap. Titan Green Pale is a little darker, cooler than Titan Buff.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Titan Green Pale is a little darker, cooler than Titan Buff.
The same difference applies the other way round: Titan Buff is a little lighter, 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 Titan Buff on the colour wheel See Titan Green Pale on the colour wheel
All matches: Titan Buff equivalents · Titan Green Pale equivalents