How to determine complementary colors?
What are the different color models?

Determine Complementary Color

140 color names
216 web safe colors
2040 RAL colors
200 shades of gray

The complementary color of #1B5151 is the color #511B1B

The HSL model was used to determine the complementary color

Input Color


HEX #1B5151
RGB 27, 81, 81
CMYK 67%, 0%, 0%, 68%
HSL 180°, 50%, 21.18%

Complementary Color


HEX #511B1B
RGB 81, 27, 27
CMYK 0%, 67%, 67%, 68%
HSL 0°, 50%, 21.18%

Complementary color scheme

#511B1B
#51511B
#1B511B
#1B5151
#1B1B51