The hex color #15ac9c is a dark color. The web-safe version is Hex
#009999. A complementary color is
#EA5363. The grayscale version is
#747474. A 20% lighter version of the original color is
#48DFCF, and Hex
#007969 is the 20% darker color. If the color is saturated by 10%, you get
#0BB2A0. If the color is desaturated by 10%, the color
#1FA698 is obtained.