Hex #667b33 or rgb(102,123,51) in RGB space is the tint of lime. It has hue angle of 77.50 degrees, value = 48 and saturation = 59. #667b33 can be obtained by mixing 4 colors: 1 drop of red, 2 drops of green, 1 drop of white, 1 drop of black.
Nearest safe hex - #666633. Below you can see the block with #667b33 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #667b33 to the mixer and play with it.