The hex color #345e4c is a dark color. The web-safe version is Hex
#336633. A complementary color is
#CBA1B3. The grayscale version is
#4A4A4A. A 20% lighter version of the original color is
#67917F, and Hex
#012B19 is the 20% darker color. If the color is saturated by 10%, you get
#32604C. If the color is desaturated by 10%, the color
#365C4C is obtained.