The hex color #1b7aa5 is a dark color. The web-safe version is Hex
#336699. A complementary color is
#E4855A. The grayscale version is
#696969. A 20% lighter version of the original color is
#4EADD8, and Hex
#004772 is the 20% darker color. If the color is saturated by 10%, you get
#137CAB. If the color is desaturated by 10%, the color
#23789F is obtained.