The hex color #12b34f is a dark color. The web-safe version is Hex
#00CC66. A complementary color is
#ED4CB0. The grayscale version is
#5C5C5C. A 20% lighter version of the original color is
#45E682, and Hex
#00801C is the 20% darker color. If the color is saturated by 10%, you get
#0BBC4E. If the color is desaturated by 10%, the color
#19AA50 is obtained.