#C73B3B#C73B3B

#C73B3B is a mid, vivid red. Relative luminance 0.156; OKLCH L 55.9% C 0.177 H 24.9°. Best body text is #FFFFFF at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#C73B3B
RGB	rgb(199, 59, 59)
HSL	hsl(0, 56%, 51%)
HSV	hsv(0, 70%, 78%)
CMYK	cmyk(0%, 70.4%, 70.4%, 22%)
CIE-LAB	lab(46.43, 55.10, 32.47)
CIE-LCH	lch(46.43, 63.95, 30.51°)
OKLab	oklab(55.95% 0.1605 0.0747)
OKLCH	oklch(55.95% 0.177 24.9)
XYZ	xyz(25.9094, 15.5897, 5.7817)
Luminance	0.1559 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C73B3B #3BC7C7

analogous

#C73B81 #C73B3B #C7813B

triadic

#C73B3B #3BC73B #3B3BC7

tetradic

#C73B3B #81C73B #3BC7C7 #813BC7

square

#C73B3B #81C73B #3BC7C7 #813BC7

split-complementary

#C73B3B #3BC781 #3B81C7

monochromatic

#691E1E #992C2C #C73B3B #D56B6B #E29A9A

Accessibility & contrast

On white

5.10

#C73B3B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#C73B3B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C73B3B

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C73B3B	#FFFFFF	#000000	##FFFFFF
##C73B3B	1.00	5.10	4.12	5.10
#FFFFFF	5.10	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#635B3A

Deuteranopia (green-blind)

#867936

Tritanopia (blue-blind)

#DB083D

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #c73b3b;
/* rgb */ color: rgb(199, 59, 59);
/* oklch */ color: oklch(55.9% 0.177 24.9);

Tailwind

colors: {
  custom: {
    50: '#e07a71',
    500: '#c73b3b',
    950: '#000000',
  },
}

SCSS

$custom: #c73b3b;
$custom-light: #e07a71;
$custom-dark: #000000;

JSON

{
  "hex": "#c73b3b",
  "rgb": {
    "r": 199,
    "g": 59,
    "b": 59
  },
  "hsl": {
    "h": 0,
    "s": 55.556,
    "l": 50.588
  },
  "oklch": {
    "l": 0.55945,
    "c": 0.17703,
    "h": 24.9
  },
  "luminance": 0.15586
}

Semantic roles & 50–950 ramp

primary

#C73B3B

secondary

#90CECE

accent

#DFDF49

background

#FEF7F6

surface

#FDEEEC

border

#D5C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #C73B3B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →