The hex color #4c697c is a dark color. The web-safe version is Hex
#336666. A complementary color is
#B39683. The grayscale version is
#666666. A 20% lighter version of the original color is
#7F9CAF, and Hex
#193649 is the 20% darker color. If the color is saturated by 10%, you get
#49697E. If the color is desaturated by 10%, the color
#4F697A is obtained.