Hex #666f55 or rgb(102,111,85) in RGB space is the tint of lime. It has hue angle of 80.77 degrees, value = 44 and saturation = 23. #666f55 can be obtained by mixing 4 colors: 3 drops of magenta, 5 drops of green, 3 drops of white, 4 drops of black.
Nearest safe hex - #666666. Below you can see the block with #666f55 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #666f55 to the mixer and play with it.