The hex color #40697c is a dark color. The web-safe version is Hex
#336666. A complementary color is
#BF9683. The grayscale version is
#626262. A 20% lighter version of the original color is
#739CAF, and Hex
#0D3649 is the 20% darker color. If the color is saturated by 10%, you get
#3D6A7F. If the color is desaturated by 10%, the color
#436879 is obtained.