Hex #1a5f77 or rgb(26,95,119) in RGB space is the tint of bluish cian. It has hue angle of 195.48 degrees, value = 47 and saturation = 78. #1a5f77 can be obtained by mixing 3 colors: 1 drop of magenta, 4 drops of cyan, 5 drops of black.
Nearest safe hex - #336666. Below you can see the block with #1a5f77 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1a5f77 to the mixer and play with it.