ΔE 13.6, fair: the same colour family, but not a straight swap. Tiger Brown is a little lighter, much more saturated than Ryza Rust.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Tiger Brown is a little lighter, much more saturated than Ryza Rust.
The same difference applies the other way round: Ryza Rust is a little darker, much 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.
See Ryza Rust on the colour wheel See Tiger Brown on the colour wheel
All matches: Ryza Rust equivalents · Tiger Brown equivalents