#B53237#B53237

#B53237 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.9% C 0.167 H 23.3°. Best body text is #FFFFFF at 6.04:1 contrast (WCAG AA passes).

Color values

HEX	#B53237
RGB	rgb(181, 50, 55)
HSL	hsl(358, 57%, 45%)
HSV	hsv(358, 72%, 71%)
CMYK	cmyk(0%, 72.4%, 69.6%, 29%)
CIE-LAB	lab(41.82, 52.51, 28.53)
CIE-LCH	lch(41.82, 59.76, 28.52°)
OKLab	oklab(51.88% 0.1538 0.0662)
OKLCH	oklch(51.88% 0.167 23.3)
XYZ	xyz(20.8885, 12.3839, 4.9041)
Luminance	0.1238 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53237 #32B5B0

analogous

#B53278 #B53237 #B56E32

triadic

#B53237 #37B532 #3237B5

tetradic

#B53237 #78B532 #32B5B0 #6E32B5

square

#B53237 #78B532 #32B5B0 #6E32B5

split-complementary

#B53237 #32B56E #3278B5

monochromatic

#55181A #852528 #B53237 #D05459 #DD8488

Accessibility & contrast

On white

6.04

#B53237 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#B53237 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53237

6.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53237	#FFFFFF	#000000	##FFFFFF
##B53237	1.00	6.04	3.48	6.04
#FFFFFF	6.04	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575136

Deuteranopia (green-blind)

#786D33

Tritanopia (blue-blind)

#C70035

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b53237;
/* rgb */ color: rgb(181, 50, 55);
/* oklch */ color: oklch(51.9% 0.167 23.3);

Tailwind

colors: {
  custom: {
    50: '#d3736e',
    500: '#b53237',
    950: '#000000',
  },
}

SCSS

$custom: #b53237;
$custom-light: #d3736e;
$custom-dark: #000000;

JSON

{
  "hex": "#b53237",
  "rgb": {
    "r": 181,
    "g": 50,
    "b": 55
  },
  "hsl": {
    "h": 357.71,
    "s": 56.71,
    "l": 45.294
  },
  "oklch": {
    "l": 0.51876,
    "c": 0.16738,
    "h": 23.3
  },
  "luminance": 0.12381
}

Semantic roles & 50–950 ramp

primary

#B53237

secondary

#7CC7C4

accent

#E0DA48

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B53237

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

Preview Lab → · Contrast checker → · Palette generator →