The hex color #40e44d is a light color. The web-safe version is Hex
#33CC66. A complementary color is
#BF1BB2. The grayscale version is
#7B7B7B. A 20% lighter version of the original color is
#73FF80, and Hex
#0DB11A is the 20% darker color. If the color is saturated by 10%, you get
#3AEF48. If the color is desaturated by 10%, the color
#46DA52 is obtained.