#B22531#B22531

#B22531 is a mid, vivid red. Relative luminance 0.110; OKLCH L 50.1% C 0.176 H 22.4°. Best body text is #FFFFFF at 6.56:1 contrast (WCAG AA passes).

Color values

HEX	#B22531
RGB	rgb(178, 37, 49)
HSL	hsl(355, 66%, 42%)
HSV	hsv(355, 79%, 70%)
CMYK	cmyk(0%, 79.2%, 72.5%, 30.2%)
CIE-LAB	lab(39.60, 55.63, 29.38)
CIE-LCH	lch(39.60, 62.91, 27.84°)
OKLab	oklab(50.09% 0.1627 0.0671)
OKLCH	oklch(50.09% 0.176 22.4)
XYZ	xyz(19.5783, 11.0129, 4.0000)
Luminance	0.1101 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B22531 #25B2A6

analogous

#B22577 #B22531 #B26025

triadic

#B22531 #31B225 #2531B2

tetradic

#B22531 #77B225 #25B2A6 #6025B2

square

#B22531 #77B225 #25B2A6 #6025B2

split-complementary

#B22531 #25B260 #2577B2

monochromatic

#4D1015 #7F1A23 #B22531 #D73D4A #E1707A

Accessibility & contrast

On white

6.56

#B22531 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#B22531 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B22531

6.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B22531	#FFFFFF	#000000	##FFFFFF
##B22531	1.00	6.56	3.20	6.56
#FFFFFF	6.56	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#504A30

Deuteranopia (green-blind)

#73682C

Tritanopia (blue-blind)

#C4002B

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #b22531;
/* rgb */ color: rgb(178, 37, 49);
/* oklch */ color: oklch(50.1% 0.176 22.4);

Tailwind

colors: {
  custom: {
    50: '#d26d69',
    500: '#b22531',
    950: '#000000',
  },
}

SCSS

$custom: #b22531;
$custom-light: #d26d69;
$custom-dark: #000000;

JSON

{
  "hex": "#b22531",
  "rgb": {
    "r": 178,
    "g": 37,
    "b": 49
  },
  "hsl": {
    "h": 354.894,
    "s": 65.581,
    "l": 42.157
  },
  "oklch": {
    "l": 0.50094,
    "c": 0.17602,
    "h": 22.4
  },
  "luminance": 0.1101
}

Semantic roles & 50–950 ramp

primary

#B22531

secondary

#6BC8C0

accent

#E9DA3F

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160806

muted

#847B7A

Preview Lab

Preview with #B22531

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

Preview Lab → · Contrast checker → · Palette generator →