Hex #5d736d or rgb(93,115,109) in RGB space is the tint of greenish cian. It has hue angle of 163.64 degrees, value = 45 and saturation = 19. #5d736d can be obtained by mixing 4 colors: 2 drops of yellow, 4 drops of blue, 2 drops of white, 3 drops of black.
Nearest safe hex - #666666. Below you can see the block with #5d736d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5d736d to the mixer and play with it.