Hex #276e55 or rgb(39,110,85) in RGB space is the tint of greenish cian. It has hue angle of 158.87 degrees, value = 43 and saturation = 65. #276e55 can be obtained by mixing 4 colors: 2 drops of magenta, 3 drops of cyan, 4 drops of green, 4 drops of black.
Nearest safe hex - #336666. Below you can see the block with #276e55 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #276e55 to the mixer and play with it.