#B22831#B22831

#B22831 is a mid, vivid red. Relative luminance 0.112; OKLCH L 50.3% C 0.174 H 23.0°. Best body text is #FFFFFF at 6.48:1 contrast (WCAG AA passes).

Color values

HEX	#B22831
RGB	rgb(178, 40, 49)
HSL	hsl(356, 63%, 43%)
HSV	hsv(356, 78%, 70%)
CMYK	cmyk(0%, 77.5%, 72.5%, 30.2%)
CIE-LAB	lab(39.93, 54.71, 29.76)
CIE-LCH	lch(39.93, 62.28, 28.55°)
OKLab	oklab(50.33% 0.1598 0.0679)
OKLCH	oklch(50.33% 0.174 23)
XYZ	xyz(19.6755, 11.2074, 4.0324)
Luminance	0.1120 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B22831 #28B2A9

analogous

#B22876 #B22831 #B26428

triadic

#B22831 #31B228 #2831B2

tetradic

#B22831 #76B228 #28B2A9 #6428B2

square

#B22831 #76B228 #28B2A9 #6428B2

split-complementary

#B22831 #28B264 #2876B2

monochromatic

#4E1215 #801D23 #B22831 #D5434C #E0757C

Accessibility & contrast

On white

6.48

#B22831 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#B22831 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B22831

6.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B22831	#FFFFFF	#000000	##FFFFFF
##B22831	1.00	6.48	3.24	6.48
#FFFFFF	6.48	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#524B30

Deuteranopia (green-blind)

#74692C

Tritanopia (blue-blind)

#C4002D

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #b22831;
/* rgb */ color: rgb(178, 40, 49);
/* oklch */ color: oklch(50.3% 0.174 23.0);

Tailwind

colors: {
  custom: {
    50: '#d16e69',
    500: '#b22831',
    950: '#000000',
  },
}

SCSS

$custom: #b22831;
$custom-light: #d16e69;
$custom-dark: #000000;

JSON

{
  "hex": "#b22831",
  "rgb": {
    "r": 178,
    "g": 40,
    "b": 49
  },
  "hsl": {
    "h": 356.087,
    "s": 63.303,
    "l": 42.745
  },
  "oklch": {
    "l": 0.50335,
    "c": 0.17366,
    "h": 23
  },
  "luminance": 0.11204
}

Semantic roles & 50–950 ramp

primary

#B22831

secondary

#6FC7C1

accent

#E6DC41

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160806

muted

#847B7A

Preview Lab

Preview with #B22831

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

Preview Lab → · Contrast checker → · Palette generator →