The hex color #42c41d is a light color. The web-safe version is Hex
#33CC33. A complementary color is
#BD3BE2. The grayscale version is
#616161. A 20% lighter version of the original color is
#75F750, and Hex
#0F9100 is the 20% darker color. If the color is saturated by 10%, you get
#3FCE16. If the color is desaturated by 10%, the color
#45BA24 is obtained.