Hex #1a6591 or rgb(26,101,145) in RGB space is the tint of bluish cian. It has hue angle of 202.18 degrees, value = 57 and saturation = 82. #1a6591 can be obtained by mixing 4 colors: 4 drops of blue, 2 drops of cyan, 1 drop of white, 3 drops of black.
Nearest safe hex - #336699. Below you can see the block with #1a6591 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1a6591 to the mixer and play with it.