#B43337#B43337

#B43337 is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.8% C 0.165 H 23.5°. Best body text is #FFFFFF at 6.05:1 contrast (WCAG AA passes).

Color values

HEX	#B43337
RGB	rgb(180, 51, 55)
HSL	hsl(358, 56%, 45%)
HSV	hsv(358, 72%, 71%)
CMYK	cmyk(0%, 71.7%, 69.4%, 29.4%)
CIE-LAB	lab(41.77, 51.82, 28.42)
CIE-LCH	lch(41.77, 59.10, 28.74°)
OKLab	oklab(51.8% 0.1517 0.066)
OKLCH	oklch(51.8% 0.165 23.5)
XYZ	xyz(20.6981, 12.3499, 4.9076)
Luminance	0.1235 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43337 #33B4B0

analogous

#B43377 #B43337 #B47033

triadic

#B43337 #37B433 #3337B4

tetradic

#B43337 #77B433 #33B4B0 #7033B4

square

#B43337 #77B433 #33B4B0 #7033B4

split-complementary

#B43337 #33B470 #3377B4

monochromatic

#55181A #842528 #B43337 #CF5559 #DC8588

Accessibility & contrast

On white

6.05

#B43337 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#B43337 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43337

6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43337	#FFFFFF	#000000	##FFFFFF
##B43337	1.00	6.05	3.47	6.05
#FFFFFF	6.05	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585136

Deuteranopia (green-blind)

#786D33

Tritanopia (blue-blind)

#C60236

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b43337;
/* rgb */ color: rgb(180, 51, 55);
/* oklch */ color: oklch(51.8% 0.165 23.5);

Tailwind

colors: {
  custom: {
    50: '#d2746e',
    500: '#b43337',
    950: '#000000',
  },
}

SCSS

$custom: #b43337;
$custom-light: #d2746e;
$custom-dark: #000000;

JSON

{
  "hex": "#b43337",
  "rgb": {
    "r": 180,
    "g": 51,
    "b": 55
  },
  "hsl": {
    "h": 358.14,
    "s": 55.844,
    "l": 45.294
  },
  "oklch": {
    "l": 0.51802,
    "c": 0.1654,
    "h": 23.5
  },
  "luminance": 0.12347
}

Semantic roles & 50–950 ramp

primary

#B43337

secondary

#7DC6C4

accent

#DFDA49

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B43337

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

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