The hex color #2f5f3f is a dark color. The web-safe version is Hex
#336633. A complementary color is
#D0A0C0. The grayscale version is
#444444. A 20% lighter version of the original color is
#629272, and Hex
#002C0C is the 20% darker color. If the color is saturated by 10%, you get
#2D623E. If the color is desaturated by 10%, the color
#315C40 is obtained.