Hex #1a7880 or rgb(26,120,128) in RGB space is the tint of cyan. It has hue angle of 184.71 degrees, value = 50 and saturation = 80. #1a7880 can be obtained by mixing 3 colors: 4 drops of cyan, 1 drop of white, 5 drops of black.
Nearest safe hex - #336699. Below you can see the block with #1a7880 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1a7880 to the mixer and play with it.