The hex color #675e9c is a dark color. The web-safe version is Hex
#666699. A complementary color is
#98A163. The grayscale version is
#767676. A 20% lighter version of the original color is
#9A91CF, and Hex
#342B69 is the 20% darker color. If the color is saturated by 10%, you get
#665CA0. If the color is desaturated by 10%, the color
#686098 is obtained.