The hex color #64df2c is a light color. The web-safe version is Hex
#66CC33. A complementary color is
#9B20D3. The grayscale version is
#7A7A7A. A 20% lighter version of the original color is
#97FF5F, and Hex
#31AC00 is the 20% darker color. If the color is saturated by 10%, you get
#62E924. If the color is desaturated by 10%, the color
#66D534 is obtained.