Agent Orange vs Light Orange

How close are they?

ΔE 16.9, loose: different enough that you should pick on purpose. Light Orange is a little darker, much more saturated than Agent Orange.

Can I use Light Orange instead of Agent Orange?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Light Orange is a little darker, much more saturated than Agent Orange.

Can I use Agent Orange instead of Light Orange?

The same difference applies the other way round: Agent Orange is a little lighter, 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.