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 #FF5151 is the color #51FFFF

The HSL model was used to determine the complementary color

Input Color


HEX #FF5151
RGB 255, 81, 81
CMYK 0%, 68%, 68%, 0%
HSL 0°, 100%, 65.88%

Complementary Color


HEX #51FFFF
RGB 81, 255, 255
CMYK 68%, 0%, 0%, 0%
HSL 180°, 100%, 65.88%

Complementary color scheme

#51FFFF
#5151FF
#FF51FF
#FF5151
#FFFF51