Hex #628e8a or rgb(98,142,138) in RGB space is the tint of cyan. It has hue angle of 174.55 degrees, value = 56 and saturation = 31. #628e8a can be obtained by mixing 4 colors: 3 drops of blue, 2 drops of green, 5 drops of white, 3 drops of black.
Nearest safe hex - #669999. Below you can see the block with #628e8a color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #628e8a to the mixer and play with it.