The hex color #3f532b is a dark color. The web-safe version is Hex
#336633. A complementary color is
#C0ACD4. The grayscale version is
#3F3F3F. A 20% lighter version of the original color is
#72865E, and Hex
#0C2000 is the 20% darker color. If the color is saturated by 10%, you get
#3F5529. If the color is desaturated by 10%, the color
#3F512D is obtained.