Hex #1aac99 or rgb(26,172,153) in RGB space is the tint of greenish cian. It has hue angle of 172.19 degrees, value = 67 and saturation = 85. #1aac99 can be obtained by mixing 4 colors: 3 drops of blue, 3 drops of cyan, 3 drops of green, 1 drop of white.
Nearest safe hex - #339999. Below you can see the block with #1aac99 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1aac99 to the mixer and play with it.