The hex color #12d6a2 is a light color. The web-safe version is Hex
#00CC99. A complementary color is
#ED295D. The grayscale version is
#838383. A 20% lighter version of the original color is
#45FFD5, and Hex
#00A36F is the 20% darker color. If the color is saturated by 10%, you get
#07DEA5. If the color is desaturated by 10%, the color
#1DCE9F is obtained.