Hex #6d8680 or rgb(109,134,128) in RGB space is the tint of greenish cian. It has hue angle of 165.60 degrees, value = 53 and saturation = 19. #6d8680 can be obtained by mixing 4 colors: 2 drops of yellow, 4 drops of red, 3 drops of blue, 5 drops of cyan.
Nearest safe hex - #669999. Below you can see the block with #6d8680 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #6d8680 to the mixer and play with it.