The hex color #40e64a is a light color. The web-safe version is Hex
#33FF33. A complementary color is
#BF19B5. The grayscale version is
#7B7B7B. A 20% lighter version of the original color is
#73FF7D, and Hex
#0DB317 is the 20% darker color. If the color is saturated by 10%, you get
#3AF145. If the color is desaturated by 10%, the color
#46DB4F is obtained.