ΔE 27.1, loose: different enough that you should pick on purpose. Tempest Blue Wash is noticeably lighter, more muted, cooler than Targor Rageshade.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 27). Tempest Blue Wash is noticeably lighter, more muted, cooler than Targor Rageshade.
The same difference applies the other way round: Targor Rageshade is noticeably 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.
See Targor Rageshade on the colour wheel See Tempest Blue Wash on the colour wheel
All matches: Targor Rageshade equivalents · Tempest Blue Wash equivalents