The hex color #6558da is a dark color. The web-safe version is Hex
#6666CC. A complementary color is
#9AA725. The grayscale version is
#888888. A 20% lighter version of the original color is
#988BFF, and Hex
#3225A7 is the 20% darker color. If the color is saturated by 10%, you get
#6253E2. If the color is desaturated by 10%, the color
#685DD2 is obtained.