ΔE 23.5, loose: different enough that you should pick on purpose. Toxic Yellow is noticeably lighter, much more saturated than Ushabti Bone.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 24). Toxic Yellow is noticeably lighter, much more saturated than Ushabti Bone.
The same difference applies the other way round: Ushabti Bone 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 Ushabti Bone on the colour wheel See Toxic Yellow on the colour wheel
All matches: Ushabti Bone equivalents · Toxic Yellow equivalents