#B83731#B83731

#B83731 is a mid, vivid red. Relative luminance 0.131; OKLCH L 52.8% C 0.167 H 27.1°. Best body text is #FFFFFF at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#B83731
RGB	rgb(184, 55, 49)
HSL	hsl(3, 58%, 46%)
HSV	hsv(3, 73%, 72%)
CMYK	cmyk(0%, 70.1%, 73.4%, 27.8%)
CIE-LAB	lab(42.98, 51.30, 33.59)
CIE-LCH	lch(42.98, 61.32, 33.21°)
OKLab	oklab(52.82% 0.1483 0.076)
OKLCH	oklch(52.82% 0.167 27.1)
XYZ	xyz(21.6902, 13.1477, 4.3008)
Luminance	0.1314 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B83731 #31B2B8

analogous

#B8316E #B83731 #B87B31

triadic

#B83731 #31B837 #3731B8

tetradic

#B83731 #6EB831 #31B2B8 #7B31B8

square

#B83731 #6EB831 #31B2B8 #7B31B8

split-complementary

#B83731 #31B87B #316EB8

monochromatic

#571A17 #882924 #B83731 #D25A55 #DE8985

Accessibility & contrast

On white

5.79

#B83731 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#B83731 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B83731

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B83731	#FFFFFF	#000000	##FFFFFF
##B83731	1.00	5.79	3.63	5.79
#FFFFFF	5.79	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C542F

Deuteranopia (green-blind)

#7C702D

Tritanopia (blue-blind)

#CA0837

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b83731;
/* rgb */ color: rgb(184, 55, 49);
/* oklch */ color: oklch(52.8% 0.167 27.1);

Tailwind

colors: {
  custom: {
    50: '#d57669',
    500: '#b83731',
    950: '#000000',
  },
}

SCSS

$custom: #b83731;
$custom-light: #d57669;
$custom-dark: #000000;

JSON

{
  "hex": "#b83731",
  "rgb": {
    "r": 184,
    "g": 55,
    "b": 49
  },
  "hsl": {
    "h": 2.667,
    "s": 57.94,
    "l": 45.686
  },
  "oklch": {
    "l": 0.52821,
    "c": 0.16659,
    "h": 27.1
  },
  "luminance": 0.13144
}

Semantic roles & 50–950 ramp

primary

#B83731

secondary

#7DC5C8

accent

#DAE147

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B83731

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

Preview Lab → · Contrast checker → · Palette generator →