The hex color #122d3c is a dark color. The web-safe version is Hex
#003333. A complementary color is
#EDD2C3. The grayscale version is
#292929. A 20% lighter version of the original color is
#45606F, and Hex
#000009 is the 20% darker color. If the color is saturated by 10%, you get
#102D3E. If the color is desaturated by 10%, the color
#142D3A is obtained.