Hex #005a6e or rgb(0,90,110) in RGB space is the tint of bluish cian. It has hue angle of 190.91 degrees, value = 43 and saturation = 100. #005a6e can be obtained by mixing 4 colors: 3 drops of blue, 1 drop of cyan, 1 drop of green, 2 drops of black.
Nearest safe hex - #006666. Below you can see the block with #005a6e color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #005a6e to the mixer and play with it.