Laser Magenta vs Phoenician Purple

How close are they?

ΔE 19.0, loose: different enough that you should pick on purpose. Phoenician Purple is a little lighter, more muted, cooler than Laser Magenta.

Can I use Phoenician Purple instead of Laser Magenta?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Phoenician Purple is a little lighter, more muted, cooler than Laser Magenta.

Can I use Laser Magenta instead of Phoenician Purple?

The same difference applies the other way round: Laser Magenta is a little darker, more saturated, 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.