Hex #15b295 or rgb(21,178,149) in RGB space is the tint of greenish cian. It has hue angle of 168.92 degrees, value = 70 and saturation = 88. #15b295 can be obtained by mixing 4 colors: 3 drops of blue, 4 drops of cyan, 4 drops of green, 1 drop of white.
Nearest safe hex - #009999. Below you can see the block with #15b295 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #15b295 to the mixer and play with it.