The hex color #58537f is a dark color. The web-safe version is Hex
#666666. A complementary color is
#A7AC80. The grayscale version is
#636363. A 20% lighter version of the original color is
#8B86B2, and Hex
#25204C is the 20% darker color. If the color is saturated by 10%, you get
#575182. If the color is desaturated by 10%, the color
#59557C is obtained.