The hex color #6b3ebc is a dark color. The web-safe version is Hex
#6633CC. A complementary color is
#94C143. The grayscale version is
#777777. A 20% lighter version of the original color is
#9E71EF, and Hex
#380B89 is the 20% darker color. If the color is saturated by 10%, you get
#6A38C3. If the color is desaturated by 10%, the color
#6C44B5 is obtained.