Hex #1a8891 or rgb(26,136,145) in RGB space is the tint of cyan. It has hue angle of 184.54 degrees, value = 57 and saturation = 82. #1a8891 can be obtained by mixing 4 colors: 1 drop of red, 4 drops of blue, 3 drops of cyan, 2 drops of green.
Nearest safe hex - #339999. Below you can see the block with #1a8891 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1a8891 to the mixer and play with it.