The hex color #78f99c is a light color. The web-safe version is Hex
#66FF99. A complementary color is
#870663. The grayscale version is
#AFAFAF. A 20% lighter version of the original color is
#ABFFCF, and Hex
#45C669 is the 20% darker color. If the color is saturated by 10%, you get
#73FF9A. If the color is desaturated by 10%, the color
#7EF29E is obtained.