The hex color #99f6ac is a light color. The web-safe version is Hex
#99FF99. A complementary color is
#660953. The grayscale version is
#BEBEBE. A 20% lighter version of the original color is
#CCFFDF, and Hex
#66C379 is the 20% darker color. If the color is saturated by 10%, you get
#95FCAA. If the color is desaturated by 10%, the color
#9DF0AE is obtained.