#B33231#B33231

#B33231 is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.4% C 0.166 H 25.6°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#B33231
RGB	rgb(179, 50, 49)
HSL	hsl(0, 57%, 45%)
HSV	hsv(0, 73%, 70%)
CMYK	cmyk(0%, 72.1%, 72.6%, 29.8%)
CIE-LAB	lab(41.36, 51.58, 31.48)
CIE-LCH	lch(41.36, 60.43, 31.39°)
OKLab	oklab(51.43% 0.1498 0.0716)
OKLCH	oklch(51.43% 0.166 25.6)
XYZ	xyz(20.2877, 12.0897, 4.1704)
Luminance	0.1209 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33231 #31B2B3

analogous

#B33171 #B33231 #B37331

triadic

#B33231 #31B332 #3231B3

tetradic

#B33231 #71B331 #31B2B3 #7331B3

square

#B33231 #71B331 #31B2B3 #7331B3

split-complementary

#B33231 #31B373 #3171B3

monochromatic

#531717 #832524 #B33231 #D05352 #DD8282

Accessibility & contrast

On white

6.15

#B33231 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#B33231 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33231

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33231	#FFFFFF	#000000	##FFFFFF
##B33231	1.00	6.15	3.42	6.15
#FFFFFF	6.15	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575030

Deuteranopia (green-blind)

#776C2D

Tritanopia (blue-blind)

#C50033

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b33231;
/* rgb */ color: rgb(179, 50, 49);
/* oklch */ color: oklch(51.4% 0.166 25.6);

Tailwind

colors: {
  custom: {
    50: '#d27369',
    500: '#b33231',
    950: '#000000',
  },
}

SCSS

$custom: #b33231;
$custom-light: #d27369;
$custom-dark: #000000;

JSON

{
  "hex": "#b33231",
  "rgb": {
    "r": 179,
    "g": 50,
    "b": 49
  },
  "hsl": {
    "h": 0.462,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51435,
    "c": 0.16601,
    "h": 25.6
  },
  "luminance": 0.12087
}

Semantic roles & 50–950 ramp

primary

#B33231

secondary

#7AC5C6

accent

#DFE048

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B33231

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

Preview Lab → · Contrast checker → · Palette generator →