The hex color #18fbbd is a light color. The web-safe version is Hex
#00FFCC. A complementary color is
#E70442. The grayscale version is
#9B9B9B. A 20% lighter version of the original color is
#4BFFF0, and Hex
#00C88A is the 20% darker color. If the color is saturated by 10%, you get
#0BFFC0. If the color is desaturated by 10%, the color
#25F1BA is obtained.