Hex #1c4f55 or rgb(28,79,85) in RGB space is the tint of cyan. It has hue angle of 186.32 degrees, value = 33 and saturation = 67. #1c4f55 can be obtained by mixing 3 colors: 1 drop of red, 3 drops of cyan, 5 drops of black.
Nearest safe hex - #336666. Below you can see the block with #1c4f55 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1c4f55 to the mixer and play with it.