The hex color #12fbd9 is a light color. The web-safe version is Hex
#00FFCC. A complementary color is
#ED0426. The grayscale version is
#A2A2A2. A 20% lighter version of the original color is
#45FFFF, and Hex
#00C8A6 is the 20% darker color. If the color is saturated by 10%, you get
#04FFDF. If the color is desaturated by 10%, the color
#20F2D4 is obtained.