The hex color #1a2c3c is a dark color. The web-safe version is Hex
#333333. A complementary color is
#E5D3C3. The grayscale version is
#2B2B2B. A 20% lighter version of the original color is
#4D5F6F, and Hex
#000009 is the 20% darker color. If the color is saturated by 10%, you get
#182C3E. If the color is desaturated by 10%, the color
#1C2C3A is obtained.