Hex #669480 or rgb(102,148,128) in RGB space is the tint of teal. It has hue angle of 153.91 degrees, value = 58 and saturation = 31. #669480 can be obtained by mixing 4 colors: 1 drop of yellow, 2 drops of cyan, 3 drops of white, 4 drops of black.
Nearest safe hex - #669999. Below you can see the block with #669480 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #669480 to the mixer and play with it.