#B55037#B55037

#B55037 is a mid, vivid red. Relative luminance 0.158; OKLCH L 55.6% C 0.137 H 35.1°. Best body text is #FFFFFF at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#B55037
RGB	rgb(181, 80, 55)
HSL	hsl(12, 53%, 46%)
HSV	hsv(12, 70%, 71%)
CMYK	cmyk(0%, 55.8%, 69.6%, 29%)
CIE-LAB	lab(46.76, 39.30, 34.37)
CIE-LCH	lch(46.76, 52.21, 41.17°)
OKLab	oklab(55.59% 0.1124 0.079)
OKLCH	oklch(55.59% 0.137 35.1)
XYZ	xyz(22.6165, 15.8398, 5.4801)
Luminance	0.1584 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B55037 #379CB5

analogous

#B5375D #B55037 #B58F37

triadic

#B55037 #37B550 #5037B5

tetradic

#B55037 #5DB537 #379CB5 #8F37B5

square

#B55037 #5DB537 #379CB5 #8F37B5

split-complementary

#B55037 #37B58F #375DB5

monochromatic

#57271A #863B29 #B55037 #CD725C #DC9B8B

Accessibility & contrast

On white

5.04

#B55037 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#B55037 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B55037

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B55037	#FFFFFF	#000000	##FFFFFF
##B55037	1.00	5.04	4.17	5.04
#FFFFFF	5.04	1.00	21.00	1.00
#000000	4.17	21.00	1.00	21.00
##FFFFFF	5.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B6134

Deuteranopia (green-blind)

#847735

Tritanopia (blue-blind)

#C63B4A

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #b55037;
/* rgb */ color: rgb(181, 80, 55);
/* oklch */ color: oklch(55.6% 0.137 35.1);

Tailwind

colors: {
  custom: {
    50: '#d2846f',
    500: '#b55037',
    950: '#000000',
  },
}

SCSS

$custom: #b55037;
$custom-light: #d2846f;
$custom-dark: #000000;

JSON

{
  "hex": "#b55037",
  "rgb": {
    "r": 181,
    "g": 80,
    "b": 55
  },
  "hsl": {
    "h": 11.905,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.55594,
    "c": 0.13733,
    "h": 35.1
  },
  "luminance": 0.15837
}

Semantic roles & 50–950 ramp

primary

#B55037

secondary

#82B8C6

accent

#C0DD4B

background

#FDF8F6

surface

#FBEFEC

border

#D4CAC7

text

#150B07

muted

#837C7A

Preview Lab

Preview with #B55037

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

Preview Lab → · Contrast checker → · Palette generator →