Hex #1c3239 or rgb(28,50,57) in RGB space is the tint of bluish cian. It has hue angle of 194.48 degrees, value = 22 and saturation = 51. #1c3239 can be obtained by mixing 3 colors: 1 drop of yellow, 3 drops of blue, 5 drops of black.
Nearest safe hex - #333333. Below you can see the block with #1c3239 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1c3239 to the mixer and play with it.