Hex #1a576f or rgb(26,87,111) in RGB space is the tint of bluish cian. It has hue angle of 196.94 degrees, value = 44 and saturation = 77. #1a576f can be obtained by mixing 4 colors: 2 drops of blue, 2 drops of cyan, 1 drop of white, 5 drops of black.
Nearest safe hex - #336666. Below you can see the block with #1a576f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1a576f to the mixer and play with it.