#B33537#B33537

#B33537 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.8% C 0.162 H 24.0°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#B33537
RGB	rgb(179, 53, 55)
HSL	hsl(359, 54%, 45%)
HSV	hsv(359, 70%, 70%)
CMYK	cmyk(0%, 70.4%, 69.3%, 29.8%)
CIE-LAB	lab(41.86, 50.73, 28.49)
CIE-LCH	lch(41.86, 58.18, 29.32°)
OKLab	oklab(51.84% 0.1484 0.0662)
OKLCH	oklch(51.84% 0.162 24)
XYZ	xyz(20.5553, 12.4088, 4.9265)
Luminance	0.1241 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33537 #35B3B1

analogous

#B33576 #B33537 #B37235

triadic

#B33537 #37B335 #3537B3

tetradic

#B33537 #76B335 #35B3B1 #7235B3

square

#B33537 #76B335 #35B3B1 #7235B3

split-complementary

#B33537 #35B372 #3576B3

monochromatic

#55191A #842728 #B33537 #CD585A #DB8788

Accessibility & contrast

On white

6.03

#B33537 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#B33537 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33537

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33537	#FFFFFF	#000000	##FFFFFF
##B33537	1.00	6.03	3.48	6.03
#FFFFFF	6.03	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585236

Deuteranopia (green-blind)

#786D33

Tritanopia (blue-blind)

#C50B37

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b33537;
/* rgb */ color: rgb(179, 53, 55);
/* oklch */ color: oklch(51.8% 0.162 24.0);

Tailwind

colors: {
  custom: {
    50: '#d1756e',
    500: '#b33537',
    950: '#000000',
  },
}

SCSS

$custom: #b33537;
$custom-light: #d1756e;
$custom-dark: #000000;

JSON

{
  "hex": "#b33537",
  "rgb": {
    "r": 179,
    "g": 53,
    "b": 55
  },
  "hsl": {
    "h": 359.048,
    "s": 54.31,
    "l": 45.49
  },
  "oklch": {
    "l": 0.51836,
    "c": 0.16244,
    "h": 24
  },
  "luminance": 0.12406
}

Semantic roles & 50–950 ramp

primary

#B33537

secondary

#7FC5C4

accent

#DEDB4A

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #B33537

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

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