The hex color #613A8F is a dark color. The web-safe version is Hex
#663399. A complementary color is
#9EC570. The grayscale version is
#636363. A 20% lighter version of the original color is
#946DC2, and Hex
#2E075C is the 20% darker color. If the color is saturated by 10%, you get
#613693. If the color is desaturated by 10%, the color
#613E8B is obtained.