Hex #1c577b or rgb(28,87,123) in RGB space is the tint of blue. It has hue angle of 202.74 degrees, value = 48 and saturation = 77. #1c577b can be obtained by mixing 4 colors: 1 drop of magenta, 1 drop of blue, 3 drops of cyan, 4 drops of black.
Nearest safe hex - #336666. Below you can see the block with #1c577b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1c577b to the mixer and play with it.