#B83737#B83737

#B83737 is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.9% C 0.166 H 24.8°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#B83737
RGB	rgb(184, 55, 55)
HSL	hsl(0, 54%, 47%)
HSV	hsv(0, 70%, 72%)
CMYK	cmyk(0%, 70.1%, 70.1%, 27.8%)
CIE-LAB	lab(43.07, 51.59, 30.16)
CIE-LCH	lch(43.07, 59.75, 30.31°)
OKLab	oklab(52.91% 0.1504 0.0696)
OKLCH	oklch(52.91% 0.166 24.8)
XYZ	xyz(21.8253, 13.2018, 5.0127)
Luminance	0.1320 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B83737 #37B8B8

analogous

#B83778 #B83737 #B87837

triadic

#B83737 #37B837 #3737B8

tetradic

#B83737 #78B837 #37B8B8 #7837B8

square

#B83737 #78B837 #37B8B8 #7837B8

split-complementary

#B83737 #37B878 #3778B8

monochromatic

#5A1B1B #892929 #B83737 #CF5D5D #DD8D8D

Accessibility & contrast

On white

5.77

#B83737 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#B83737 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B83737

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B83737	#FFFFFF	#000000	##FFFFFF
##B83737	1.00	5.77	3.64	5.77
#FFFFFF	5.77	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5436

Deuteranopia (green-blind)

#7C7033

Tritanopia (blue-blind)

#CA0C39

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b83737;
/* rgb */ color: rgb(184, 55, 55);
/* oklch */ color: oklch(52.9% 0.166 24.8);

Tailwind

colors: {
  custom: {
    50: '#d5766e',
    500: '#b83737',
    950: '#000000',
  },
}

SCSS

$custom: #b83737;
$custom-light: #d5766e;
$custom-dark: #000000;

JSON

{
  "hex": "#b83737",
  "rgb": {
    "r": 184,
    "g": 55,
    "b": 55
  },
  "hsl": {
    "h": 0,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.52908,
    "c": 0.16576,
    "h": 24.8
  },
  "luminance": 0.13199
}

Semantic roles & 50–950 ramp

primary

#B83737

secondary

#84C7C7

accent

#DDDD4A

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B83737

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

Preview Lab → · Contrast checker → · Palette generator →