Hex #557d68 or rgb(85,125,104) in RGB space is the tint of teal. It has hue angle of 148.50 degrees, value = 49 and saturation = 32. #557d68 can be obtained by mixing 4 colors: 2 drops of magenta, 2 drops of blue, 4 drops of green, 1 drop of white.
Nearest safe hex - #666666. Below you can see the block with #557d68 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #557d68 to the mixer and play with it.