The hex color #1a2d2d is a dark color. The web-safe version is Hex
#333333. A complementary color is
#E5D2D2. The grayscale version is
#272727. A 20% lighter version of the original color is
#4D6060, and Hex
#000000 is the 20% darker color. If the color is saturated by 10%, you get
#192E2E. If the color is desaturated by 10%, the color
#1B2C2C is obtained.