Hex #1a91a2 or rgb(26,145,162) in RGB space is the tint of bluish cian. It has hue angle of 187.50 degrees, value = 64 and saturation = 84. #1a91a2 can be obtained by mixing 4 colors: 5 drops of blue, 2 drops of cyan, 2 drops of green, 1 drop of white.
Nearest safe hex - #339999. Below you can see the block with #1a91a2 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #1a91a2 to the mixer and play with it.