The hex color #666600 is a dark color. The web-safe version is Hex
#666600. A complementary color is
#9999FF. The grayscale version is
#444444. A 20% lighter version of the original color is
#999933, and Hex
#333300 is the 20% darker color. If the color is saturated by 10%, you get
#696900. If the color is desaturated by 10%, the color
#636307 is obtained.