ΔE 9.6, close: similar, with a visible difference side by side. Gray FS36622 is a little lighter, cooler than Bony Spikes.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Gray FS36622 is a little lighter, cooler than Bony Spikes.
The same difference applies the other way round: Bony Spikes is a little darker, warmer.
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 Bony Spikes on the colour wheel See Gray FS36622 on the colour wheel
All matches: Bony Spikes equivalents · Gray FS36622 equivalents