The hex color #12fd09 is a light color. The web-safe version is Hex
#00FF00. A complementary color is
#ED02F6. The grayscale version is
#5D5D5D. A 20% lighter version of the original color is
#45FF3C, and Hex
#00CA00 is the 20% darker color. If the color is saturated by 10%, you get
#0AFF01. If the color is desaturated by 10%, the color
#1AED11 is obtained.