The hex color #623e2e is a dark color. The web-safe version is Hex
#663333. A complementary color is
#9DC1D1. The grayscale version is
#454545. A 20% lighter version of the original color is
#957161, and Hex
#2F0B00 is the 20% darker color. If the color is saturated by 10%, you get
#653D2C. If the color is desaturated by 10%, the color
#5F3F30 is obtained.