ΔE 32.1, loose: different enough that you should pick on purpose. Polished Gold is noticeably lighter, much more saturated than Cold Steel.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 32). Polished Gold is noticeably lighter, much more saturated than Cold Steel.
The same difference applies the other way round: Cold Steel is noticeably 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.
See Cold Steel on the colour wheel See Polished Gold on the colour wheel
All matches: Cold Steel equivalents · Polished Gold equivalents