#C73737#C73737

#C73737 is a mid, vivid red. Relative luminance 0.151; OKLCH L 55.5% C 0.181 H 25.3°. Best body text is #FFFFFF at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#C73737
RGB	rgb(199, 55, 55)
HSL	hsl(0, 57%, 50%)
HSV	hsv(0, 72%, 78%)
CMYK	cmyk(0%, 72.4%, 72.4%, 22%)
CIE-LAB	lab(45.84, 56.38, 34.11)
CIE-LCH	lch(45.84, 65.90, 31.18°)
OKLab	oklab(55.49% 0.1637 0.0775)
OKLCH	oklch(55.49% 0.181 25.3)
XYZ	xyz(25.6119, 15.1542, 5.1901)
Luminance	0.1515 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C73737 #37C7C7

analogous

#C7377F #C73737 #C77F37

triadic

#C73737 #37C737 #3737C7

tetradic

#C73737 #7FC737 #37C7C7 #7F37C7

square

#C73737 #7FC737 #37C7C7 #7F37C7

split-complementary

#C73737 #37C77F #377FC7

monochromatic

#671C1C #972A2A #C73737 #D56666 #E29696

Accessibility & contrast

On white

5.21

#C73737 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.03

#C73737 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C73737

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C73737	#FFFFFF	#000000	##FFFFFF
##C73737	1.00	5.21	4.03	5.21
#FFFFFF	5.21	1.00	21.00	1.00
#000000	4.03	21.00	1.00	21.00
##FFFFFF	5.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#615935

Deuteranopia (green-blind)

#857832

Tritanopia (blue-blind)

#DB0039

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #c73737;
/* rgb */ color: rgb(199, 55, 55);
/* oklch */ color: oklch(55.5% 0.181 25.3);

Tailwind

colors: {
  custom: {
    50: '#e1786e',
    500: '#c73737',
    950: '#000000',
  },
}

SCSS

$custom: #c73737;
$custom-light: #e1786e;
$custom-dark: #000000;

JSON

{
  "hex": "#c73737",
  "rgb": {
    "r": 199,
    "g": 55,
    "b": 55
  },
  "hsl": {
    "h": 0,
    "s": 56.693,
    "l": 49.804
  },
  "oklch": {
    "l": 0.5549,
    "c": 0.18115,
    "h": 25.3
  },
  "luminance": 0.1515
}

Semantic roles & 50–950 ramp

primary

#C73737

secondary

#8CCDCD

accent

#E0E048

background

#FFF7F6

surface

#FEEEEC

border

#D6C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #C73737

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

Preview Lab → · Contrast checker → · Palette generator →