Ruddy Umber vs Bugman's Glow

How close are they?

ΔE 12.9, fair: the same colour family, but not a straight swap. Bugman's Glow is noticeably lighter, warmer than Ruddy Umber.

✓ Army Painter Fanatic conversion chart lists these two as equivalents.

Can I use Bugman's Glow instead of Ruddy Umber?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Bugman's Glow is noticeably lighter, warmer than Ruddy Umber.

Can I use Ruddy Umber instead of Bugman's Glow?

The same difference applies the other way round: Ruddy Umber is noticeably darker, cooler.

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.