Hex #1a5e80 or rgb(26,94,128) in RGB space is the tint of bluish cian. It has hue angle of 200.00 degrees, value = 50 and saturation = 80. #1a5e80 can be obtained by mixing 4 colors: 3 drops of blue, 2 drops of cyan, 1 drop of white, 4 drops of black.
Nearest safe hex - #336699. Below you can see the block with #1a5e80 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1a5e80 to the mixer and play with it.