Mithril vs Purple Quasar

How close are they?

ΔE 16.3, loose: different enough that you should pick on purpose. Purple Quasar is a little lighter, much more saturated than Mithril.

Can I use Purple Quasar instead of Mithril?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Purple Quasar is a little lighter, much more saturated than Mithril.

Can I use Mithril instead of Purple Quasar?

The same difference applies the other way round: Mithril 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.