Hex #669155 or rgb(102,145,85) in RGB space is the tint of grass green. It has hue angle of 103.00 degrees, value = 57 and saturation = 41. #669155 can be obtained by mixing 4 colors: 1 drop of red, 5 drops of green, 5 drops of white, 4 drops of black.
Nearest safe hex - #669966. Below you can see the block with #669155 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #669155 to the mixer and play with it.