Hex #1a8cb3 or rgb(26,140,179) in RGB space is the tint of bluish cian. It has hue angle of 195.29 degrees, value = 70 and saturation = 85. #1a8cb3 can be obtained by mixing 4 colors: 1 drop of red, 3 drops of blue, 5 drops of cyan, 1 drop of black.
Nearest safe hex - #3399cc. Below you can see the block with #1a8cb3 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1a8cb3 to the mixer and play with it.