#B22728#B22728

#B22728 is a mid, vivid red. Relative luminance 0.111; OKLCH L 50.1% C 0.175 H 26.0°. Best body text is #FFFFFF at 6.53:1 contrast (WCAG AA passes).

Color values

HEX	#B22728
RGB	rgb(178, 39, 40)
HSL	hsl(360, 64%, 43%)
HSV	hsv(360, 78%, 70%)
CMYK	cmyk(0%, 78.1%, 77.5%, 30.2%)
CIE-LAB	lab(39.70, 54.65, 34.84)
CIE-LCH	lch(39.70, 64.82, 32.52°)
OKLab	oklab(50.13% 0.1577 0.0768)
OKLCH	oklch(50.13% 0.175 26)
XYZ	xyz(19.4709, 11.0723, 3.1190)
Luminance	0.1107 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B22728 #27B2B1

analogous

#B2276E #B22728 #B26B27

triadic

#B22728 #28B227 #2728B2

tetradic

#B22728 #6EB227 #27B2B1 #6B27B2

square

#B22728 #6EB227 #27B2B1 #6B27B2

split-complementary

#B22728 #27B26B #276EB2

monochromatic

#4E1111 #801C1D #B22728 #D54142 #E07374

Accessibility & contrast

On white

6.53

#B22728 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#B22728 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B22728

6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B22728	#FFFFFF	#000000	##FFFFFF
##B22728	1.00	6.53	3.21	6.53
#FFFFFF	6.53	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#524A26

Deuteranopia (green-blind)

#746822

Tritanopia (blue-blind)

#C40029

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #b22728;
/* rgb */ color: rgb(178, 39, 40);
/* oklch */ color: oklch(50.1% 0.175 26.0);

Tailwind

colors: {
  custom: {
    50: '#d26e62',
    500: '#b22728',
    950: '#000000',
  },
}

SCSS

$custom: #b22728;
$custom-light: #d26e62;
$custom-dark: #000000;

JSON

{
  "hex": "#b22728",
  "rgb": {
    "r": 178,
    "g": 39,
    "b": 40
  },
  "hsl": {
    "h": 359.568,
    "s": 64.055,
    "l": 42.549
  },
  "oklch": {
    "l": 0.50131,
    "c": 0.17538,
    "h": 26
  },
  "luminance": 0.11069
}

Semantic roles & 50–950 ramp

primary

#B22728

secondary

#6DC8C7

accent

#E7E641

background

#FEF7F5

surface

#FCEDEA

border

#D5C8C6

text

#160805

muted

#847B79

Preview Lab

Preview with #B22728

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

Preview Lab → · Contrast checker → · Palette generator →