#B22828#B22828

#B22828 is a mid, vivid red. Relative luminance 0.111; OKLCH L 50.2% C 0.175 H 26.2°. Best body text is #FFFFFF at 6.51:1 contrast (WCAG AA passes).

Color values

HEX	#B22828
RGB	rgb(178, 40, 40)
HSL	hsl(0, 63%, 43%)
HSV	hsv(0, 78%, 70%)
CMYK	cmyk(0%, 77.5%, 77.5%, 30.2%)
CIE-LAB	lab(39.81, 54.34, 34.96)
CIE-LCH	lch(39.81, 64.62, 32.76°)
OKLab	oklab(50.21% 0.1567 0.0771)
OKLCH	oklch(50.21% 0.175 26.2)
XYZ	xyz(19.5042, 11.1389, 3.1301)
Luminance	0.1114 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B22828 #28B2B2

analogous

#B2286D #B22828 #B26D28

triadic

#B22828 #28B228 #2828B2

tetradic

#B22828 #6DB228 #28B2B2 #6D28B2

square

#B22828 #6DB228 #28B2B2 #6D28B2

split-complementary

#B22828 #28B26D #286DB2

monochromatic

#4E1212 #801D1D #B22828 #D54343 #E07575

Accessibility & contrast

On white

6.51

#B22828 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#B22828 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B22828

6.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B22828	#FFFFFF	#000000	##FFFFFF
##B22828	1.00	6.51	3.23	6.51
#FFFFFF	6.51	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534B26

Deuteranopia (green-blind)

#756922

Tritanopia (blue-blind)

#C4002A

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #b22828;
/* rgb */ color: rgb(178, 40, 40);
/* oklch */ color: oklch(50.2% 0.175 26.2);

Tailwind

colors: {
  custom: {
    50: '#d26e62',
    500: '#b22828',
    950: '#000000',
  },
}

SCSS

$custom: #b22828;
$custom-light: #d26e62;
$custom-dark: #000000;

JSON

{
  "hex": "#b22828",
  "rgb": {
    "r": 178,
    "g": 40,
    "b": 40
  },
  "hsl": {
    "h": 0,
    "s": 63.303,
    "l": 42.745
  },
  "oklch": {
    "l": 0.50214,
    "c": 0.17461,
    "h": 26.2
  },
  "luminance": 0.11136
}

Semantic roles & 50–950 ramp

primary

#B22828

secondary

#6FC7C7

accent

#E6E641

background

#FEF7F5

surface

#FCEDEA

border

#D5C8C6

text

#160805

muted

#847B79

Preview Lab

Preview with #B22828

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

Preview Lab → · Contrast checker → · Palette generator →