The hex color #271d5c is a dark color. The web-safe version is Hex
#333366. A complementary color is
#D8E2A3. The grayscale version is
#353535. A 20% lighter version of the original color is
#5A508F, and Hex
#000029 is the 20% darker color. If the color is saturated by 10%, you get
#261B60. If the color is desaturated by 10%, the color
#281F58 is obtained.