Hex #77b450 or rgb(119,180,80) in RGB space is the tint of olive. It has hue angle of 96.60 degrees, value = 71 and saturation = 56. #77b450 can be obtained by mixing 4 colors: 5 drops of yellow, 4 drops of blue, 4 drops of green, 2 drops of white.
Nearest safe hex - #66cc66. Below you can see the block with #77b450 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #77b450 to the mixer and play with it.