The hex color #42b401 is a dark color. The web-safe version is Hex
#33CC00. A complementary color is
#BD4BFE. The grayscale version is
#525252. A 20% lighter version of the original color is
#75E734, and Hex
#0F8100 is the 20% darker color. If the color is saturated by 10%, you get
#40BE00. If the color is desaturated by 10%, the color
#44AA09 is obtained.