The hex color #399c7c is a dark color. The web-safe version is Hex
#339966. A complementary color is
#C66383. The grayscale version is
#707070. A 20% lighter version of the original color is
#6CCFAF, and Hex
#066949 is the 20% darker color. If the color is saturated by 10%, you get
#33A07D. If the color is desaturated by 10%, the color
#3F987B is obtained.