The hex color #66075c is a dark color. The web-safe version is Hex
#660066. A complementary color is
#99F8A3. The grayscale version is
#434343. A 20% lighter version of the original color is
#993A8F, and Hex
#330029 is the 20% darker color. If the color is saturated by 10%, you get
#6A015F. If the color is desaturated by 10%, the color
#630D5A is obtained.