The hex color #349b9c is a dark color. The web-safe version is Hex
#339999. A complementary color is
#CB6463. The grayscale version is
#797979. A 20% lighter version of the original color is
#67CECF, and Hex
#016869 is the 20% darker color. If the color is saturated by 10%, you get
#2D9EA0. If the color is desaturated by 10%, the color
#3B9899 is obtained.