The hex color #b4005c is a dark color. The web-safe version is Hex
#CC0066. A complementary color is
#4BFFA3. The grayscale version is
#5B5B5B. A 20% lighter version of the original color is
#E7338F, and Hex
#810029 is the 20% darker color. If the color is saturated by 10%, you get
#BD005C. If the color is desaturated by 10%, the color
#AB095C is obtained.