The hex color #a23c34 is a dark color. The web-safe version is Hex
#993333. A complementary color is
#5DC3CB. The grayscale version is
#5B5B5B. A 20% lighter version of the original color is
#D56F67, and Hex
#6F0901 is the 20% darker color. If the color is saturated by 10%, you get
#A93930. If the color is desaturated by 10%, the color
#9B3F38 is obtained.