Hex #778f66 or rgb(119,143,102) in RGB space is the tint of olive. It has hue angle of 95.12 degrees, value = 56 and saturation = 29. #778f66 can be obtained by mixing 4 colors: 3 drops of red, 3 drops of blue, 5 drops of green, 4 drops of white.
Nearest safe hex - #669966. Below you can see the block with #778f66 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #778f66 to the mixer and play with it.