The hex color #77d32c is a light color. The web-safe version is Hex
#66CC33. A complementary color is
#882CD3. The grayscale version is
#7D7D7D. A 20% lighter version of the original color is
#AAFF5F, and Hex
#44A000 is the 20% darker color. If the color is saturated by 10%, you get
#76DC24. If the color is desaturated by 10%, the color
#78CA34 is obtained.