#B22537#B22537

#B22537 is a mid, vivid red. Relative luminance 0.111; OKLCH L 50.2% C 0.176 H 20.1°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#B22537
RGB	rgb(178, 37, 55)
HSL	hsl(352, 66%, 42%)
HSV	hsv(352, 79%, 70%)
CMYK	cmyk(0%, 79.2%, 69.1%, 30.2%)
CIE-LAB	lab(39.69, 55.91, 25.81)
CIE-LCH	lch(39.69, 61.58, 24.78°)
OKLab	oklab(50.19% 0.165 0.0602)
OKLCH	oklch(50.19% 0.176 20.1)
XYZ	xyz(19.7135, 11.0670, 4.7118)
Luminance	0.1106 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B22537 #25B2A0

analogous

#B2257E #B22537 #B25925

triadic

#B22537 #37B225 #2537B2

tetradic

#B22537 #7EB225 #25B2A0 #5925B2

square

#B22537 #7EB225 #25B2A0 #5925B2

split-complementary

#B22537 #25B259 #257EB2

monochromatic

#4D1018 #7F1A27 #B22537 #D73D51 #E1707F

Accessibility & contrast

On white

6.54

#B22537 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#B22537 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B22537

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B22537	#FFFFFF	#000000	##FFFFFF
##B22537	1.00	6.54	3.21	6.54
#FFFFFF	6.54	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#504A37

Deuteranopia (green-blind)

#736833

Tritanopia (blue-blind)

#C4002D

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #b22537;
/* rgb */ color: rgb(178, 37, 55);
/* oklch */ color: oklch(50.2% 0.176 20.1);

Tailwind

colors: {
  custom: {
    50: '#d16d6d',
    500: '#b22537',
    950: '#000000',
  },
}

SCSS

$custom: #b22537;
$custom-light: #d16d6d;
$custom-dark: #000000;

JSON

{
  "hex": "#b22537",
  "rgb": {
    "r": 178,
    "g": 37,
    "b": 55
  },
  "hsl": {
    "h": 352.34,
    "s": 65.581,
    "l": 42.157
  },
  "oklch": {
    "l": 0.5019,
    "c": 0.17564,
    "h": 20.1
  },
  "luminance": 0.11064
}

Semantic roles & 50–950 ramp

primary

#B22537

secondary

#6BC8BC

accent

#E9D33F

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160807

muted

#847B7A

Preview Lab

Preview with #B22537

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

Preview Lab → · Contrast checker → · Palette generator →