Hex #125d74 or rgb(18,93,116) in RGB space is the tint of bluish cian. It has hue angle of 194.08 degrees, value = 45 and saturation = 84. #125d74 can be obtained by mixing 4 colors: 1 drop of yellow, 5 drops of blue, 3 drops of cyan, 5 drops of black.
Nearest safe hex - #006666. Below you can see the block with #125d74 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #125d74 to the mixer and play with it.