The hex color #6e669c is a dark color. The web-safe version is Hex
#666699. A complementary color is
#919963. The grayscale version is
#7B7B7B. A 20% lighter version of the original color is
#A199CF, and Hex
#3B3369 is the 20% darker color. If the color is saturated by 10%, you get
#6D649F. If the color is desaturated by 10%, the color
#6F6899 is obtained.