#B12337#B12337

#B12337 is a mid, vivid red. Relative luminance 0.108; OKLCH L 49.9% C 0.176 H 19.6°. Best body text is #FFFFFF at 6.64:1 contrast (WCAG AA passes).

Color values

HEX	#B12337
RGB	rgb(177, 35, 55)
HSL	hsl(352, 67%, 42%)
HSV	hsv(352, 80%, 69%)
CMYK	cmyk(0%, 80.2%, 68.9%, 30.6%)
CIE-LAB	lab(39.29, 56.20, 25.26)
CIE-LCH	lch(39.29, 61.62, 24.21°)
OKLab	oklab(49.86% 0.166 0.0591)
OKLCH	oklch(49.86% 0.176 19.6)
XYZ	xyz(19.4243, 10.8280, 4.6809)
Luminance	0.1082 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B12337 #23B19D

analogous

#B1237E #B12337 #B15623

triadic

#B12337 #37B123 #2337B1

tetradic

#B12337 #7EB123 #23B19D #5623B1

square

#B12337 #7EB123 #23B19D #5623B1

split-complementary

#B12337 #23B156 #237EB1

monochromatic

#4B0F17 #7E1927 #B12337 #D83950 #E26C7D

Accessibility & contrast

On white

6.64

#B12337 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#B12337 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B12337

6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B12337	#FFFFFF	#000000	##FFFFFF
##B12337	1.00	6.64	3.17	6.64
#FFFFFF	6.64	1.00	21.00	1.00
#000000	3.17	21.00	1.00	21.00
##FFFFFF	6.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E4937

Deuteranopia (green-blind)

#726733

Tritanopia (blue-blind)

#C3002C

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #b12337;
/* rgb */ color: rgb(177, 35, 55);
/* oklch */ color: oklch(49.9% 0.176 19.6);

Tailwind

colors: {
  custom: {
    50: '#d06d6d',
    500: '#b12337',
    950: '#000000',
  },
}

SCSS

$custom: #b12337;
$custom-light: #d06d6d;
$custom-dark: #000000;

JSON

{
  "hex": "#b12337",
  "rgb": {
    "r": 177,
    "g": 35,
    "b": 55
  },
  "hsl": {
    "h": 351.549,
    "s": 66.981,
    "l": 41.569
  },
  "oklch": {
    "l": 0.49856,
    "c": 0.17623,
    "h": 19.6
  },
  "luminance": 0.10825
}

Semantic roles & 50–950 ramp

primary

#B12337

secondary

#68C8BB

accent

#EAD23E

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150807

muted

#837B7A

Preview Lab

Preview with #B12337

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

Preview Lab → · Contrast checker → · Palette generator →