#B83539#B83539

#B83539 is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.7% C 0.167 H 23.4°. Best body text is #FFFFFF at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#B83539
RGB	rgb(184, 53, 57)
HSL	hsl(358, 55%, 46%)
HSV	hsv(358, 71%, 72%)
CMYK	cmyk(0%, 71.2%, 69%, 27.8%)
CIE-LAB	lab(42.82, 52.46, 28.66)
CIE-LCH	lch(42.82, 59.78, 28.65°)
OKLab	oklab(52.73% 0.1536 0.0666)
OKLCH	oklch(52.73% 0.167 23.4)
XYZ	xyz(21.7811, 13.0352, 5.2392)
Luminance	0.1303 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B83539 #35B8B4

analogous

#B8357B #B83539 #B87335

triadic

#B83539 #39B835 #3539B8

tetradic

#B83539 #7BB835 #35B8B4 #7335B8

square

#B83539 #7BB835 #35B8B4 #7335B8

split-complementary

#B83539 #35B873 #357BB8

monochromatic

#591A1C #88272A #B83539 #D05B5E #DD8A8D

Accessibility & contrast

On white

5.82

#B83539 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#B83539 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B83539

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B83539	#FFFFFF	#000000	##FFFFFF
##B83539	1.00	5.82	3.61	5.82
#FFFFFF	5.82	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5338

Deuteranopia (green-blind)

#7B6F35

Tritanopia (blue-blind)

#CA0538

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b83539;
/* rgb */ color: rgb(184, 53, 57);
/* oklch */ color: oklch(52.7% 0.167 23.4);

Tailwind

colors: {
  custom: {
    50: '#d5756f',
    500: '#b83539',
    950: '#000000',
  },
}

SCSS

$custom: #b83539;
$custom-light: #d5756f;
$custom-dark: #000000;

JSON

{
  "hex": "#b83539",
  "rgb": {
    "r": 184,
    "g": 53,
    "b": 57
  },
  "hsl": {
    "h": 358.168,
    "s": 55.274,
    "l": 46.471
  },
  "oklch": {
    "l": 0.52731,
    "c": 0.16744,
    "h": 23.4
  },
  "luminance": 0.13032
}

Semantic roles & 50–950 ramp

primary

#B83539

secondary

#81C7C5

accent

#DFDA49

background

#FEF7F6

surface

#FCEDEC

border

#D5C8C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B83539

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

Preview Lab → · Contrast checker → · Palette generator →