#B72A37#B72A37

#B72A37 is a mid, vivid red. Relative luminance 0.120; OKLCH L 51.5% C 0.176 H 21.5°. Best body text is #FFFFFF at 6.18:1 contrast (WCAG AA passes).

Color values

HEX	#B72A37
RGB	rgb(183, 42, 55)
HSL	hsl(354, 63%, 44%)
HSV	hsv(354, 77%, 72%)
CMYK	cmyk(0%, 77%, 69.9%, 28.2%)
CIE-LAB	lab(41.22, 55.87, 27.89)
CIE-LCH	lch(41.22, 62.44, 26.53°)
OKLab	oklab(51.5% 0.1642 0.0647)
OKLCH	oklch(51.5% 0.176 21.5)
XYZ	xyz(21.0484, 12.0023, 4.8221)
Luminance	0.1200 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B72A37 #2AB7AA

analogous

#B72A7E #B72A37 #B7642A

triadic

#B72A37 #37B72A #2A37B7

tetradic

#B72A37 #7EB72A #2AB7AA #642AB7

square

#B72A37 #7EB72A #2AB7AA #642AB7

split-complementary

#B72A37 #2AB764 #2A7EB7

monochromatic

#531319 #851F28 #B72A37 #D54956 #E17B84

Accessibility & contrast

On white

6.18

#B72A37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#B72A37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B72A37

6.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B72A37	#FFFFFF	#000000	##FFFFFF
##B72A37	1.00	6.18	3.40	6.18
#FFFFFF	6.18	1.00	21.00	1.00
#000000	3.40	21.00	1.00	21.00
##FFFFFF	6.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544E36

Deuteranopia (green-blind)

#776C32

Tritanopia (blue-blind)

#C90030

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b72a37;
/* rgb */ color: rgb(183, 42, 55);
/* oklch */ color: oklch(51.5% 0.176 21.5);

Tailwind

colors: {
  custom: {
    50: '#d5706d',
    500: '#b72a37',
    950: '#000000',
  },
}

SCSS

$custom: #b72a37;
$custom-light: #d5706d;
$custom-dark: #000000;

JSON

{
  "hex": "#b72a37",
  "rgb": {
    "r": 183,
    "g": 42,
    "b": 55
  },
  "hsl": {
    "h": 354.468,
    "s": 62.667,
    "l": 44.118
  },
  "oklch": {
    "l": 0.51498,
    "c": 0.17643,
    "h": 21.5
  },
  "luminance": 0.11999
}

Semantic roles & 50–950 ramp

primary

#B72A37

secondary

#74C9C1

accent

#E6D742

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160807

muted

#847B7A

Preview Lab

Preview with #B72A37

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

Preview Lab → · Contrast checker → · Palette generator →