The hex color #64c116 is a light color. The web-safe version is Hex
#66CC00. A complementary color is
#9B3EE9. The grayscale version is
#696969. A 20% lighter version of the original color is
#97F449, and Hex
#318E00 is the 20% darker color. If the color is saturated by 10%, you get
#64CA0E. If the color is desaturated by 10%, the color
#65B81E is obtained.