#B33337#B33337

#B33337 is a mid, vivid red. Relative luminance 0.122; OKLCH L 51.6% C 0.164 H 23.5°. Best body text is #FFFFFF at 6.10:1 contrast (WCAG AA passes).

Color values

HEX	#B33337
RGB	rgb(179, 51, 55)
HSL	hsl(358, 56%, 45%)
HSV	hsv(358, 72%, 70%)
CMYK	cmyk(0%, 71.5%, 69.3%, 29.8%)
CIE-LAB	lab(41.58, 51.50, 28.15)
CIE-LCH	lch(41.58, 58.69, 28.66°)
OKLab	oklab(51.63% 0.1508 0.0654)
OKLCH	oklch(51.63% 0.164 23.5)
XYZ	xyz(20.4660, 12.2302, 4.8967)
Luminance	0.1223 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33337 #33B3AF

analogous

#B33377 #B33337 #B36F33

triadic

#B33337 #37B333 #3337B3

tetradic

#B33337 #77B333 #33B3AF #6F33B3

square

#B33337 #77B333 #33B3AF #6F33B3

split-complementary

#B33337 #33B36F #3377B3

monochromatic

#54181A #832528 #B33337 #CE5559 #DC8487

Accessibility & contrast

On white

6.10

#B33337 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#B33337 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33337

6.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33337	#FFFFFF	#000000	##FFFFFF
##B33337	1.00	6.10	3.45	6.10
#FFFFFF	6.10	1.00	21.00	1.00
#000000	3.45	21.00	1.00	21.00
##FFFFFF	6.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575136

Deuteranopia (green-blind)

#776C33

Tritanopia (blue-blind)

#C50436

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b33337;
/* rgb */ color: rgb(179, 51, 55);
/* oklch */ color: oklch(51.6% 0.164 23.5);

Tailwind

colors: {
  custom: {
    50: '#d1746e',
    500: '#b33337',
    950: '#000000',
  },
}

SCSS

$custom: #b33337;
$custom-light: #d1746e;
$custom-dark: #000000;

JSON

{
  "hex": "#b33337",
  "rgb": {
    "r": 179,
    "g": 51,
    "b": 55
  },
  "hsl": {
    "h": 358.125,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.51628,
    "c": 0.16437,
    "h": 23.5
  },
  "luminance": 0.12227
}

Semantic roles & 50–950 ramp

primary

#B33337

secondary

#7CC6C3

accent

#DFDA49

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #B33337

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

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