ΔE 6.8, close: similar, with a visible difference side by side. Dark Elf Shadow is a little darker, more saturated than Bleached Strap Grey.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Dark Elf Shadow is a little darker, more saturated than Bleached Strap Grey.
The same difference applies the other way round: Bleached Strap Grey 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 Strap Grey on the colour wheel See Dark Elf Shadow on the colour wheel
All matches: Bleached Strap Grey equivalents · Dark Elf Shadow equivalents