Hex #1a8c99 or rgb(26,140,153) in RGB space is the tint of cyan. It has hue angle of 186.14 degrees, value = 60 and saturation = 83. #1a8c99 can be obtained by mixing 4 colors: 1 drop of yellow, 3 drops of blue, 4 drops of cyan, 2 drops of black.
Nearest safe hex - #339999. Below you can see the block with #1a8c99 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1a8c99 to the mixer and play with it.