The hex color #a90a5d is a dark color. The web-safe version is Hex
#990066. A complementary color is
#56F5A2. The grayscale version is
#5B5B5B. A 20% lighter version of the original color is
#DC3D90, and Hex
#76002A is the 20% darker color. If the color is saturated by 10%, you get
#B1025D. If the color is desaturated by 10%, the color
#A1125D is obtained.