The hex color #12a57a is a dark color. The web-safe version is Hex
#009966. A complementary color is
#ED5A85. The grayscale version is
#666666. A 20% lighter version of the original color is
#45D8AD, and Hex
#007247 is the 20% darker color. If the color is saturated by 10%, you get
#0AAB7C. If the color is desaturated by 10%, the color
#1A9F78 is obtained.