The hex color #3b3b3f is a dark color. The web-safe version is Hex
#333333. A complementary color is
#C4C4C0. The grayscale version is
#3C3C3C. A 20% lighter version of the original color is
#6E6E72, and Hex
#08080C is the 20% darker color. If the color is saturated by 10%, you get
#3B3B3F. If the color is desaturated by 10%, the color
#3B3B3F is obtained.