The hex color #687d22 is a dark color. The web-safe version is Hex
#666633. A complementary color is
#9782DD. The grayscale version is
#585858. A 20% lighter version of the original color is
#9BB055, and Hex
#354A00 is the 20% darker color. If the color is saturated by 10%, you get
#6A811D. If the color is desaturated by 10%, the color
#667927 is obtained.