ΔE 10.4, fair: the same colour family, but not a straight swap. Screaming Skull is a little darker, more saturated than Bleached Bone.
✓ Army Painter Fanatic conversion chart lists these two as equivalents.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Screaming Skull is a little darker, more saturated than Bleached Bone.
The same difference applies the other way round: Bleached Bone is a little lighter, 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 Bleached Bone on the colour wheel See Screaming Skull on the colour wheel
All matches: Bleached Bone equivalents · Screaming Skull equivalents