The hex color #6871b0 is a dark color. The web-safe version is Hex
#666699. A complementary color is
#978E4F. The grayscale version is
#838383. A 20% lighter version of the original color is
#9BA4E3, and Hex
#353E7D is the 20% darker color. If the color is saturated by 10%, you get
#656FB5. If the color is desaturated by 10%, the color
#6B73AC is obtained.