The hex color #7c9b51 is a light color. The web-safe version is Hex
#669966. A complementary color is
#8364AE. The grayscale version is
#787878. A 20% lighter version of the original color is
#AFCE84, and Hex
#49681E is the 20% darker color. If the color is saturated by 10%, you get
#7C9F4D. If the color is desaturated by 10%, the color
#7C9855 is obtained.