ΔE 10.0, fair: the same colour family, but not a straight swap. Kraken Lavender is more saturated than Melancholic Grey.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Kraken Lavender is more saturated than Melancholic Grey.
The same difference applies the other way round: Melancholic Grey is 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 Melancholic Grey on the colour wheel See Kraken Lavender on the colour wheel
All matches: Melancholic Grey equivalents · Kraken Lavender equivalents