How do deer, primary prey for tigers, perceive the tiger's orange fur?

Answer

As shades of green, causing the tiger to blend with foliage

Since many deer species are red-green colorblind, the tiger's orange fur registers as a shade of green, providing exceptional camouflage against the surrounding green foliage.

How do deer, primary prey for tigers, perceive the tiger's orange fur?
adaptationphysicalTiger