The hex color #682bdd is a dark color. The web-safe version is Hex
#6633CC. A complementary color is
#97D422. The grayscale version is
#7B7B7B. A 20% lighter version of the original color is
#9B5EFF, and Hex
#3500AA is the 20% darker color. If the color is saturated by 10%, you get
#6623E7. If the color is desaturated by 10%, the color
#6A33D3 is obtained.