Hex #004542 or rgb(0,69,66) in RGB space is the tint of cyan. It has hue angle of 177.39 degrees, value = 27 and saturation = 100. #004542 can be obtained by mixing 3 colors: 5 drops of blue, 3 drops of green, 5 drops of black.
Nearest safe hex - #003333. Below you can see the block with #004542 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #004542 to the mixer and play with it.