#B22B37#B22B37

#B22B37 is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.7% C 0.171 H 21.3°. Best body text is #FFFFFF at 6.38:1 contrast (WCAG AA passes).

Color values

HEX	#B22B37
RGB	rgb(178, 43, 55)
HSL	hsl(355, 61%, 43%)
HSV	hsv(355, 76%, 70%)
CMYK	cmyk(0%, 75.8%, 69.1%, 30.2%)
CIE-LAB	lab(40.36, 54.03, 26.63)
CIE-LCH	lch(40.36, 60.24, 26.24°)
OKLab	oklab(50.69% 0.159 0.0621)
OKLCH	oklch(50.69% 0.171 21.3)
XYZ	xyz(19.9158, 11.4716, 4.7793)
Luminance	0.1147 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B22B37 #2BB2A6

analogous

#B22B7A #B22B37 #B2622B

triadic

#B22B37 #37B22B #2B37B2

tetradic

#B22B37 #7AB22B #2BB2A6 #622BB2

square

#B22B37 #7AB22B #2BB2A6 #622BB2

split-complementary

#B22B37 #2BB262 #2B7AB2

monochromatic

#4F1319 #811F28 #B22B37 #D34854 #DF7982

Accessibility & contrast

On white

6.38

#B22B37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#B22B37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B22B37

6.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B22B37	#FFFFFF	#000000	##FFFFFF
##B22B37	1.00	6.38	3.29	6.38
#FFFFFF	6.38	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#524D36

Deuteranopia (green-blind)

#746A33

Tritanopia (blue-blind)

#C40031

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #b22b37;
/* rgb */ color: rgb(178, 43, 55);
/* oklch */ color: oklch(50.7% 0.171 21.3);

Tailwind

colors: {
  custom: {
    50: '#d1706d',
    500: '#b22b37',
    950: '#000000',
  },
}

SCSS

$custom: #b22b37;
$custom-light: #d1706d;
$custom-dark: #000000;

JSON

{
  "hex": "#b22b37",
  "rgb": {
    "r": 178,
    "g": 43,
    "b": 55
  },
  "hsl": {
    "h": 354.667,
    "s": 61.086,
    "l": 43.333
  },
  "oklch": {
    "l": 0.50688,
    "c": 0.17067,
    "h": 21.3
  },
  "luminance": 0.11469
}

Semantic roles & 50–950 ramp

primary

#B22B37

secondary

#72C7BF

accent

#E4D644

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150807

muted

#837B7A

Preview Lab

Preview with #B22B37

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

Preview Lab → · Contrast checker → · Palette generator →