The hex color #6e66df is a dark color. The web-safe version is Hex
#6666CC. A complementary color is
#919920. The grayscale version is
#919191. A 20% lighter version of the original color is
#A199FF, and Hex
#3B33AC is the 20% darker color. If the color is saturated by 10%, you get
#6B62E7. If the color is desaturated by 10%, the color
#726AD7 is obtained.