The hex color #57a10e is a dark color. The web-safe version is Hex
#669900. A complementary color is
#A85EF1. The grayscale version is
#575757. A 20% lighter version of the original color is
#8AD441, and Hex
#246E00 is the 20% darker color. If the color is saturated by 10%, you get
#57A807. If the color is desaturated by 10%, the color
#579A15 is obtained.