The hex color #51750c is a dark color. The web-safe version is Hex
#666600. A complementary color is
#AE8AF3. The grayscale version is
#464646. A 20% lighter version of the original color is
#84A83F, and Hex
#1E4200 is the 20% darker color. If the color is saturated by 10%, you get
#527A06. If the color is desaturated by 10%, the color
#507012 is obtained.