The hex color #12c38a is a light color. The web-safe version is Hex
#00CC99. A complementary color is
#ED3C75. The grayscale version is
#757575. A 20% lighter version of the original color is
#45F6BD, and Hex
#009057 is the 20% darker color. If the color is saturated by 10%, you get
#08CB8C. If the color is desaturated by 10%, the color
#1CBB88 is obtained.