The hex color #04cf33 is a light color. The web-safe version is Hex
#00CC33. A complementary color is
#FB30CC. The grayscale version is
#575757. A 20% lighter version of the original color is
#37FF66, and Hex
#009C00 is the 20% darker color. If the color is saturated by 10%, you get
#00DB2F. If the color is desaturated by 10%, the color
#0CC337 is obtained.