Hex #1a8b89 or rgb(26,139,137) in RGB space is the tint of cyan. It has hue angle of 178.94 degrees, value = 55 and saturation = 81. #1a8b89 can be obtained by mixing 4 colors: 5 drops of blue, 1 drop of cyan, 3 drops of green, 1 drop of white.
Nearest safe hex - #339999. Below you can see the block with #1a8b89 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1a8b89 to the mixer and play with it.