The hex color #3b4f45 is a dark color. The web-safe version is Hex
#336633. A complementary color is
#C4B0BA. The grayscale version is
#454545. A 20% lighter version of the original color is
#6E8278, and Hex
#081C12 is the 20% darker color. If the color is saturated by 10%, you get
#3A5045. If the color is desaturated by 10%, the color
#3C4E45 is obtained.