ΔE 12.5, fair: the same colour family, but not a straight swap. Sun-bleached Bone is noticeably lighter, more saturated than Basilisk Brown.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Sun-bleached Bone is noticeably lighter, more saturated than Basilisk Brown.
The same difference applies the other way round: Basilisk Brown is noticeably darker, 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 Basilisk Brown on the colour wheel See Sun-bleached Bone on the colour wheel
All matches: Basilisk Brown equivalents · Sun-bleached Bone equivalents