#B43131#B43131

#B43131 is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.5% C 0.168 H 25.3°. Best body text is #FFFFFF at 6.13:1 contrast (WCAG AA passes).

Color values

HEX	#B43131
RGB	rgb(180, 49, 49)
HSL	hsl(0, 57%, 45%)
HSV	hsv(0, 73%, 71%)
CMYK	cmyk(0%, 72.8%, 72.8%, 29.4%)
CIE-LAB	lab(41.41, 52.27, 31.59)
CIE-LCH	lch(41.41, 61.07, 31.15°)
OKLab	oklab(51.51% 0.1518 0.0718)
OKLCH	oklch(51.51% 0.168 25.3)
XYZ	xyz(20.4774, 12.1248, 4.1672)
Luminance	0.1212 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43131 #31B4B4

analogous

#B43173 #B43131 #B47331

triadic

#B43131 #31B431 #3131B4

tetradic

#B43131 #73B431 #31B4B4 #7331B4

square

#B43131 #73B431 #31B4B4 #7331B4

split-complementary

#B43131 #31B473 #3173B4

monochromatic

#541717 #842424 #B43131 #D05252 #DD8282

Accessibility & contrast

On white

6.13

#B43131 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#B43131 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43131

6.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43131	#FFFFFF	#000000	##FFFFFF
##B43131	1.00	6.13	3.42	6.13
#FFFFFF	6.13	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575030

Deuteranopia (green-blind)

#786C2C

Tritanopia (blue-blind)

#C60033

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b43131;
/* rgb */ color: rgb(180, 49, 49);
/* oklch */ color: oklch(51.5% 0.168 25.3);

Tailwind

colors: {
  custom: {
    50: '#d37369',
    500: '#b43131',
    950: '#000000',
  },
}

SCSS

$custom: #b43131;
$custom-light: #d37369;
$custom-dark: #000000;

JSON

{
  "hex": "#b43131",
  "rgb": {
    "r": 180,
    "g": 49,
    "b": 49
  },
  "hsl": {
    "h": 0,
    "s": 57.205,
    "l": 44.902
  },
  "oklch": {
    "l": 0.51511,
    "c": 0.16794,
    "h": 25.3
  },
  "luminance": 0.12122
}

Semantic roles & 50–950 ramp

primary

#B43131

secondary

#7BC6C6

accent

#E0E047

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B43131

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

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