Shyish Purple vs Garnet Purple

How close are they?

ΔE 31.7, loose: different enough that you should pick on purpose. Garnet Purple is much more muted, warmer than Shyish Purple.

Can I use Garnet Purple instead of Shyish Purple?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 32). Garnet Purple is much more muted, warmer than Shyish Purple.

Can I use Shyish Purple instead of Garnet Purple?

The same difference applies the other way round: Shyish Purple is much more saturated, cooler.

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.