Hex #668b0b or rgb(102,139,11) in RGB space is the tint of lime. It has hue angle of 77.34 degrees, value = 55 and saturation = 92. #668b0b can be obtained by mixing 4 colors: 5 drops of yellow, 1 drop of magenta, 5 drops of green, 4 drops of black.
Nearest safe hex - #669900. Below you can see the block with #668b0b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #668b0b to the mixer and play with it.