Hex #66e077 or rgb(102,224,119) in RGB space is the tint of bluish green. It has hue angle of 128.36 degrees, value = 88 and saturation = 54. #66e077 can be obtained by mixing 4 colors: 4 drops of yellow, 5 drops of cyan, 4 drops of green, 2 drops of white.
Nearest safe hex - #66cc66. Below you can see the block with #66e077 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66e077 to the mixer and play with it.