The hex color #77f98c is a light color. The web-safe version is Hex
#66FF99. A complementary color is
#880673. The grayscale version is
#A9A9A9. A 20% lighter version of the original color is
#AAFFBF, and Hex
#44C659 is the 20% darker color. If the color is saturated by 10%, you get
#72FF89. If the color is desaturated by 10%, the color
#7CF18F is obtained.