Hex #1a5c80 or rgb(26,92,128) in RGB space is the tint of bluish cian. It has hue angle of 201.18 degrees, value = 50 and saturation = 80. #1a5c80 can be obtained by mixing 4 colors: 1 drop of red, 3 drops of blue, 3 drops of cyan, 3 drops of black.
Nearest safe hex - #336699. Below you can see the block with #1a5c80 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1a5c80 to the mixer and play with it.