Hex #129186 or rgb(18,145,134) in RGB space is the tint of cyan. It has hue angle of 174.80 degrees, value = 57 and saturation = 88. #129186 can be obtained by mixing 4 colors: 1 drop of red, 5 drops of blue, 4 drops of cyan, 4 drops of green.
Nearest safe hex - #009999. Below you can see the block with #129186 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #129186 to the mixer and play with it.