ΔE 50.9, loose: different enough that you should pick on purpose. Ink Blue is a little darker, more saturated, cooler than Transparent Brown.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 51). Ink Blue is a little darker, more saturated, cooler than Transparent Brown.
The same difference applies the other way round: Transparent Brown is a little lighter, more muted, 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 Transparent Brown on the colour wheel See Ink Blue on the colour wheel
All matches: Transparent Brown equivalents · Ink Blue equivalents