The hex color #270b3c is a dark color. The web-safe version is Hex
#330033. A complementary color is
#D8F4C3. The grayscale version is
#252525. A 20% lighter version of the original color is
#5A3E6F, and Hex
#000009 is the 20% darker color. If the color is saturated by 10%, you get
#27083E. If the color is desaturated by 10%, the color
#270E3A is obtained.