#B33431#B33431

#B33431 is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.6% C 0.164 H 26.1°. Best body text is #FFFFFF at 6.08:1 contrast (WCAG AA passes).

Color values

HEX	#B33431
RGB	rgb(179, 52, 49)
HSL	hsl(1, 57%, 45%)
HSV	hsv(1, 73%, 70%)
CMYK	cmyk(0%, 70.9%, 72.6%, 29.8%)
CIE-LAB	lab(41.63, 50.82, 31.79)
CIE-LCH	lch(41.63, 59.95, 32.03°)
OKLab	oklab(51.64% 0.1474 0.0723)
OKLCH	oklch(51.64% 0.164 26.1)
XYZ	xyz(20.3750, 12.2645, 4.1996)
Luminance	0.1226 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33431 #31B0B3

analogous

#B3316F #B33431 #B37531

triadic

#B33431 #31B334 #3431B3

tetradic

#B33431 #6FB331 #31B0B3 #7531B3

square

#B33431 #6FB331 #31B0B3 #7531B3

split-complementary

#B33431 #31B375 #316FB3

monochromatic

#531817 #832624 #B33431 #D05552 #DD8482

Accessibility & contrast

On white

6.08

#B33431 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#B33431 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33431

6.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33431	#FFFFFF	#000000	##FFFFFF
##B33431	1.00	6.08	3.45	6.08
#FFFFFF	6.08	1.00	21.00	1.00
#000000	3.45	21.00	1.00	21.00
##FFFFFF	6.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#58512F

Deuteranopia (green-blind)

#786C2D

Tritanopia (blue-blind)

#C50435

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b33431;
/* rgb */ color: rgb(179, 52, 49);
/* oklch */ color: oklch(51.6% 0.164 26.1);

Tailwind

colors: {
  custom: {
    50: '#d27469',
    500: '#b33431',
    950: '#000000',
  },
}

SCSS

$custom: #b33431;
$custom-light: #d27469;
$custom-dark: #000000;

JSON

{
  "hex": "#b33431",
  "rgb": {
    "r": 179,
    "g": 52,
    "b": 49
  },
  "hsl": {
    "h": 1.385,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51641,
    "c": 0.16416,
    "h": 26.1
  },
  "luminance": 0.12261
}

Semantic roles & 50–950 ramp

primary

#B33431

secondary

#7AC4C6

accent

#DDE048

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B33431

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

Preview Lab → · Contrast checker → · Palette generator →