Hex #1a9899 or rgb(26,152,153) in RGB space is the tint of cyan. It has hue angle of 180.47 degrees, value = 60 and saturation = 83. #1a9899 can be obtained by mixing 4 colors: 1 drop of red, 3 drops of blue, 4 drops of cyan, 2 drops of green.
Nearest safe hex - #339999. Below you can see the block with #1a9899 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1a9899 to the mixer and play with it.