Hex #4d9289 or rgb(77,146,137) in RGB space is the tint of greenish cian. It has hue angle of 172.17 degrees, value = 57 and saturation = 47. #4d9289 can be obtained by mixing 4 colors: 1 drop of yellow, 5 drops of blue, 2 drops of green, 2 drops of white.
Nearest safe hex - #669999. Below you can see the block with #4d9289 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #4d9289 to the mixer and play with it.