The hex color #75749c is a dark color. The web-safe version is Hex
#666699. A complementary color is
#8A8B63. The grayscale version is
#828282. A 20% lighter version of the original color is
#A8A7CF, and Hex
#424169 is the 20% darker color. If the color is saturated by 10%, you get
#74739F. If the color is desaturated by 10%, the color
#767599 is obtained.