Hex #55b879 or rgb(85,184,121) in RGB space is the tint of bluish green. It has hue angle of 141.82 degrees, value = 72 and saturation = 54. #55b879 can be obtained by mixing 4 colors: 4 drops of yellow, 1 drop of blue, 5 drops of cyan, 2 drops of black.
Nearest safe hex - #66cc66. Below you can see the block with #55b879 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55b879 to the mixer and play with it.