#B43437#B43437

#B43437 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.9% C 0.164 H 23.8°. Best body text is #FFFFFF at 6.02:1 contrast (WCAG AA passes).

Color values

HEX	#B43437
RGB	rgb(180, 52, 55)
HSL	hsl(359, 55%, 45%)
HSV	hsv(359, 71%, 71%)
CMYK	cmyk(0%, 71.1%, 69.4%, 29.4%)
CIE-LAB	lab(41.90, 51.44, 28.59)
CIE-LCH	lch(41.90, 58.85, 29.06°)
OKLab	oklab(51.9% 0.1505 0.0663)
OKLCH	oklch(51.9% 0.164 23.8)
XYZ	xyz(20.7422, 12.4382, 4.9223)
Luminance	0.1244 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43437 #34B4B1

analogous

#B43477 #B43437 #B47134

triadic

#B43437 #37B434 #3437B4

tetradic

#B43437 #77B434 #34B4B1 #7134B4

square

#B43437 #77B434 #34B4B1 #7134B4

split-complementary

#B43437 #34B471 #3477B4

monochromatic

#55191A #852628 #B43437 #CE575A #DC8688

Accessibility & contrast

On white

6.02

#B43437 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#B43437 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43437

6.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43437	#FFFFFF	#000000	##FFFFFF
##B43437	1.00	6.02	3.49	6.02
#FFFFFF	6.02	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585136

Deuteranopia (green-blind)

#786D33

Tritanopia (blue-blind)

#C60636

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b43437;
/* rgb */ color: rgb(180, 52, 55);
/* oklch */ color: oklch(51.9% 0.164 23.8);

Tailwind

colors: {
  custom: {
    50: '#d2746e',
    500: '#b43437',
    950: '#000000',
  },
}

SCSS

$custom: #b43437;
$custom-light: #d2746e;
$custom-dark: #000000;

JSON

{
  "hex": "#b43437",
  "rgb": {
    "r": 180,
    "g": 52,
    "b": 55
  },
  "hsl": {
    "h": 358.594,
    "s": 55.172,
    "l": 45.49
  },
  "oklch": {
    "l": 0.51904,
    "c": 0.16445,
    "h": 23.8
  },
  "luminance": 0.12435
}

Semantic roles & 50–950 ramp

primary

#B43437

secondary

#7EC6C4

accent

#DFDB49

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B43437

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

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