#B43137#B43137

#B43137 is a mid, vivid red. Relative luminance 0.122; OKLCH L 51.6% C 0.167 H 23.0°. Best body text is #FFFFFF at 6.11:1 contrast (WCAG AA passes).

Color values

HEX	#B43137
RGB	rgb(180, 49, 55)
HSL	hsl(357, 57%, 45%)
HSV	hsv(357, 73%, 71%)
CMYK	cmyk(0%, 72.8%, 69.4%, 29.4%)
CIE-LAB	lab(41.50, 52.56, 28.10)
CIE-LCH	lch(41.50, 59.60, 28.13°)
OKLab	oklab(51.6% 0.154 0.0652)
OKLCH	oklch(51.6% 0.167 23)
XYZ	xyz(20.6126, 12.1788, 4.8791)
Luminance	0.1218 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43137 #31B4AE

analogous

#B43178 #B43137 #B46D31

triadic

#B43137 #37B431 #3137B4

tetradic

#B43137 #78B431 #31B4AE #6D31B4

square

#B43137 #78B431 #31B4AE #6D31B4

split-complementary

#B43137 #31B46D #3178B4

monochromatic

#54171A #842428 #B43137 #D05258 #DD8286

Accessibility & contrast

On white

6.11

#B43137 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.44

#B43137 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43137

6.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43137	#FFFFFF	#000000	##FFFFFF
##B43137	1.00	6.11	3.44	6.11
#FFFFFF	6.11	1.00	21.00	1.00
#000000	3.44	21.00	1.00	21.00
##FFFFFF	6.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#565036

Deuteranopia (green-blind)

#776C33

Tritanopia (blue-blind)

#C60035

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b43137;
/* rgb */ color: rgb(180, 49, 55);
/* oklch */ color: oklch(51.6% 0.167 23.0);

Tailwind

colors: {
  custom: {
    50: '#d2736e',
    500: '#b43137',
    950: '#000000',
  },
}

SCSS

$custom: #b43137;
$custom-light: #d2736e;
$custom-dark: #000000;

JSON

{
  "hex": "#b43137",
  "rgb": {
    "r": 180,
    "g": 49,
    "b": 55
  },
  "hsl": {
    "h": 357.252,
    "s": 57.205,
    "l": 44.902
  },
  "oklch": {
    "l": 0.51602,
    "c": 0.16728,
    "h": 23
  },
  "luminance": 0.12176
}

Semantic roles & 50–950 ramp

primary

#B43137

secondary

#7BC6C3

accent

#E0D947

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B43137

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

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