ΔE 8.8, close: similar, with a visible difference side by side. March of the Fire Ants is a little lighter, more muted than Cypress Brown.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). March of the Fire Ants is a little lighter, more muted than Cypress Brown.
The same difference applies the other way round: Cypress Brown is a little darker, more saturated.
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 Cypress Brown on the colour wheel See March of the Fire Ants on the colour wheel
All matches: Cypress Brown equivalents · March of the Fire Ants equivalents