Hex #668a11 or rgb(102,138,17) in RGB space is the tint of lime. It has hue angle of 77.85 degrees, value = 54 and saturation = 88. #668a11 can be obtained by mixing 4 colors: 4 drops of yellow, 1 drop of blue, 2 drops of green, 3 drops of black.
Nearest safe hex - #669900. Below you can see the block with #668a11 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #668a11 to the mixer and play with it.