The hex color #64c20c is a light color. The web-safe version is Hex
#66CC00. A complementary color is
#9B3DF3. The grayscale version is
#666666. A 20% lighter version of the original color is
#97F53F, and Hex
#318F00 is the 20% darker color. If the color is saturated by 10%, you get
#64CB03. If the color is desaturated by 10%, the color
#64B915 is obtained.