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 #B7212C is the color #21B7AA

The HSL model was used to determine the complementary color

Input Color


HEX #B7212C
RGB 183, 33, 44
CMYK 0%, 82%, 76%, 28%
HSL 355.6°, 69.44%, 42.35%

Complementary Color


HEX #21B7AA
RGB 33, 183, 170
CMYK 82%, 0%, 7%, 28%
HSL 174.8°, 69.44%, 42.35%

Complementary color scheme

#21B7AB
#212DB7
#AB21B7
#B7212D
#B7AB21