The hex color #40e48e is a light color. The web-safe version is Hex
#33CC99. A complementary color is
#BF1B71. The grayscale version is
#919191. A 20% lighter version of the original color is
#73FFC1, and Hex
#0DB15B is the 20% darker color. If the color is saturated by 10%, you get
#38EC8E. If the color is desaturated by 10%, the color
#48DC8E is obtained.