The hex color #3dc76c is a light color. The web-safe version is Hex
#33CC66. A complementary color is
#C23893. The grayscale version is
#7B7B7B. A 20% lighter version of the original color is
#70FA9F, and Hex
#0A9439 is the 20% darker color. If the color is saturated by 10%, you get
#37CF6B. If the color is desaturated by 10%, the color
#43BF6D is obtained.