The hex color #31fb2c is a light color. The web-safe version is Hex
#33FF33. A complementary color is
#CE04D3. The grayscale version is
#737373. A 20% lighter version of the original color is
#64FF5F, and Hex
#00C800 is the 20% darker color. If the color is saturated by 10%, you get
#2AFF25. If the color is desaturated by 10%, the color
#38ED33 is obtained.