The hex color #6c6fcf is a dark color. The web-safe version is Hex
#6666CC. A complementary color is
#939030. The grayscale version is
#8E8E8E. A 20% lighter version of the original color is
#9FA2FF, and Hex
#393C9C is the 20% darker color. If the color is saturated by 10%, you get
#696CD6. If the color is desaturated by 10%, the color
#6F72C9 is obtained.