The hex color #a33b4f is a dark color. The web-safe version is Hex
#993366. A complementary color is
#5CC4B0. The grayscale version is
#646464. A 20% lighter version of the original color is
#D66E82, and Hex
#70081C is the 20% darker color. If the color is saturated by 10%, you get
#A9374D. If the color is desaturated by 10%, the color
#9D3F51 is obtained.