The hex color #f66a6f is a light color. The web-safe version is Hex
#FF6666. A complementary color is
#099590. The grayscale version is
#9A9A9A. A 20% lighter version of the original color is
#FF9DA2, and Hex
#C3373C is the 20% darker color. If the color is saturated by 10%, you get
#FF656B. If the color is desaturated by 10%, the color
#ED6F73 is obtained.