The hex color #6b58d0 is a dark color. The web-safe version is Hex
#6666CC. A complementary color is
#94A72F. The grayscale version is
#868686. A 20% lighter version of the original color is
#9E8BFF, and Hex
#38259D is the 20% darker color. If the color is saturated by 10%, you get
#6853D7. If the color is desaturated by 10%, the color
#6E5DC9 is obtained.