The hex color #6c6d8c is a dark color. The web-safe version is Hex
#666699. A complementary color is
#939273. The grayscale version is
#777777. A 20% lighter version of the original color is
#9FA0BF, and Hex
#393A59 is the 20% darker color. If the color is saturated by 10%, you get
#6B6C8E. If the color is desaturated by 10%, the color
#6D6E8A is obtained.