Color: British Night Varnish (NIVO)
In 1917 and 1918 the British experimented with various night colors but settled on a dark grey-green known as Night Invisible Varnish, Orfordness or "NIVO". It was applied to night-fighters both on fabric and metal.
The usual caveats: As always, there was frequently variation in paint color, weathering, varnishing, etc., so this is just a general guide. Unless you've got a high-end, wide-gamut monitor in perfect calibration (and who does?), do not trust the colors you see on your monitor! Instead, visit your local paint store and see if you can find paint samples like the ones listed below and then match your hobby paints or mixes against those. The goal is just to "get close". See 'Color: why we'll never get it exactly right'.
Entries with an asterisk (*) are excellent matches; entries with question marks (?) have not been formally measured with a color meter and are therefore unconfirmed; entries with (~) are not a great match but they are adequate.
Sources: Windsock Datafile 4 and 14
British "NIVO" 1917-1918 Night Fighters Methuen/CIElab House Paints and Standards Hobby Paints
38.72,-4.45,5.97
WD4,14Australian Std G66 Environment Green
Beauti-Tone Mined Ore D32-3-0443-3
Behr Naturalism MQ6-19
Benjamin Moore Backwoods CC-630
DIN6164 TSD 24-1-5
Dulux Granite Green 50GY 13/064
FS595c 34079 Forest Green
NCS1950 S 7005-G20Y
RAL Design 120 40 05
RAL Effect 840-5 *
RAL Classic 7009 Green grey
Sherwin-Williams Shade-Grown 6188
Valspar La Fonda Territory Green 5004-2CVallejo Model Color 70.830 German FieldGrey WWII
Vallejo Model Color 90.896 Reflective Green
Color matching with 1989 Methuen Handbook of Color and Nix Color sensor
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