The hex color #42ff2c is a light color. The web-safe version is Hex
#33FF33. A complementary color is
#BD00D3. The grayscale version is
#7A7A7A. A 20% lighter version of the original color is
#75FF5F, and Hex
#0FCC00 is the 20% darker color. If the color is saturated by 10%, you get
#3CFF24. If the color is desaturated by 10%, the color
#48F234 is obtained.