The hex color #31d24d is a light color. The web-safe version is Hex
#33CC66. A complementary color is
#CE2DB2. The grayscale version is
#707070. A 20% lighter version of the original color is
#64FF80, and Hex
#009F1A is the 20% darker color. If the color is saturated by 10%, you get
#2BDC4A. If the color is desaturated by 10%, the color
#37C851 is obtained.