Hex #77a688 or rgb(119,166,136) in RGB space is the tint of bluish green. It has hue angle of 141.70 degrees, value = 65 and saturation = 28. #77a688 can be obtained by mixing 4 colors: 4 drops of red, 5 drops of cyan, 3 drops of green, 3 drops of white.
Nearest safe hex - #669999. Below you can see the block with #77a688 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #77a688 to the mixer and play with it.