The hex color #12f30b is a light color. The web-safe version is Hex
#00FF00. A complementary color is
#ED0CF4. The grayscale version is
#5B5B5B. A 20% lighter version of the original color is
#45FF3E, and Hex
#00C000 is the 20% darker color. If the color is saturated by 10%, you get
#0BFF03. If the color is desaturated by 10%, the color
#19E413 is obtained.