The hex color #78d19e is a light color. The web-safe version is Hex
#66CC99. A complementary color is
#872E61. The grayscale version is
#A2A2A2. A 20% lighter version of the original color is
#ABFFD1, and Hex
#459E6B is the 20% darker color. If the color is saturated by 10%, you get
#74D69E. If the color is desaturated by 10%, the color
#7CCC9E is obtained.