The hex color #6b7d5c is a dark color. The web-safe version is Hex
#666666. A complementary color is
#9482A3. The grayscale version is
#6C6C6C. A 20% lighter version of the original color is
#9EB08F, and Hex
#384A29 is the 20% darker color. If the color is saturated by 10%, you get
#6B7F5A. If the color is desaturated by 10%, the color
#6B7B5E is obtained.