#B53337#B53337

#B53337 is a mid, vivid red. Relative luminance 0.125; OKLCH L 52.0% C 0.166 H 23.6°. Best body text is #FFFFFF at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#B53337
RGB	rgb(181, 51, 55)
HSL	hsl(358, 56%, 45%)
HSV	hsv(358, 72%, 71%)
CMYK	cmyk(0%, 71.8%, 69.6%, 29%)
CIE-LAB	lab(41.95, 52.14, 28.69)
CIE-LCH	lch(41.95, 59.51, 28.82°)
OKLab	oklab(51.98% 0.1526 0.0665)
OKLCH	oklch(51.98% 0.166 23.6)
XYZ	xyz(20.9318, 12.4704, 4.9185)
Luminance	0.1247 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53337 #33B5B1

analogous

#B53378 #B53337 #B57033

triadic

#B53337 #37B533 #3337B5

tetradic

#B53337 #78B533 #33B5B1 #7033B5

square

#B53337 #78B533 #33B5B1 #7033B5

split-complementary

#B53337 #33B570 #3378B5

monochromatic

#56181A #852628 #B53337 #CF565A #DD8688

Accessibility & contrast

On white

6.01

#B53337 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#B53337 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53337

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53337	#FFFFFF	#000000	##FFFFFF
##B53337	1.00	6.01	3.49	6.01
#FFFFFF	6.01	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585136

Deuteranopia (green-blind)

#796D33

Tritanopia (blue-blind)

#C70136

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b53337;
/* rgb */ color: rgb(181, 51, 55);
/* oklch */ color: oklch(52.0% 0.166 23.6);

Tailwind

colors: {
  custom: {
    50: '#d3746e',
    500: '#b53337',
    950: '#000000',
  },
}

SCSS

$custom: #b53337;
$custom-light: #d3746e;
$custom-dark: #000000;

JSON

{
  "hex": "#b53337",
  "rgb": {
    "r": 181,
    "g": 51,
    "b": 55
  },
  "hsl": {
    "h": 358.154,
    "s": 56.034,
    "l": 45.49
  },
  "oklch": {
    "l": 0.51976,
    "c": 0.16644,
    "h": 23.6
  },
  "luminance": 0.12467
}

Semantic roles & 50–950 ramp

primary

#B53337

secondary

#7DC6C4

accent

#DFDB48

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B53337

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

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