#CB373B#CB373B

#CB373B is a mid, vivid red. Relative luminance 0.157; OKLCH L 56.2% C 0.185 H 24.1°. Best body text is #FFFFFF at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#CB373B
RGB	rgb(203, 55, 59)
HSL	hsl(358, 59%, 51%)
HSV	hsv(358, 73%, 80%)
CMYK	cmyk(0%, 72.9%, 70.9%, 20.4%)
CIE-LAB	lab(46.64, 57.80, 32.90)
CIE-LCH	lch(46.64, 66.51, 29.65°)
OKLab	oklab(56.24% 0.1686 0.0754)
OKLCH	oklch(56.24% 0.185 24.1)
XYZ	xyz(26.7872, 15.7487, 5.7661)
Luminance	0.1575 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB373B #37CBC7

analogous

#CB3785 #CB373B #CB7D37

triadic

#CB373B #3BCB37 #373BCB

tetradic

#CB373B #85CB37 #37CBC7 #7D37CB

square

#CB373B #85CB37 #37CBC7 #7D37CB

split-complementary

#CB373B #37CB7D #3785CB

monochromatic

#6C1C1E #9C292C #CB373B #D8686B #E4989A

Accessibility & contrast

On white

5.06

#CB373B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.15

#CB373B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB373B

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB373B	#FFFFFF	#000000	##FFFFFF
##CB373B	1.00	5.06	4.15	5.06
#FFFFFF	5.06	1.00	21.00	1.00
#000000	4.15	21.00	1.00	21.00
##FFFFFF	5.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#625A3A

Deuteranopia (green-blind)

#877A36

Tritanopia (blue-blind)

#DF003A

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #cb373b;
/* rgb */ color: rgb(203, 55, 59);
/* oklch */ color: oklch(56.2% 0.185 24.1);

Tailwind

colors: {
  custom: {
    50: '#e37971',
    500: '#cb373b',
    950: '#000000',
  },
}

SCSS

$custom: #cb373b;
$custom-light: #e37971;
$custom-dark: #000000;

JSON

{
  "hex": "#cb373b",
  "rgb": {
    "r": 203,
    "g": 55,
    "b": 59
  },
  "hsl": {
    "h": 358.378,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.56237,
    "c": 0.18469,
    "h": 24.1
  },
  "luminance": 0.15745
}

Semantic roles & 50–950 ramp

primary

#CB373B

secondary

#8ED0CE

accent

#E2DE46

background

#FFF7F6

surface

#FEEEEC

border

#D6C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CB373B

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

Preview Lab → · Contrast checker → · Palette generator →