#B72B37#B72B37

#B72B37 is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.6% C 0.176 H 21.7°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#B72B37
RGB	rgb(183, 43, 55)
HSL	hsl(355, 62%, 44%)
HSV	hsv(355, 77%, 72%)
CMYK	cmyk(0%, 76.5%, 69.9%, 28.2%)
CIE-LAB	lab(41.33, 55.55, 28.03)
CIE-LCH	lch(41.33, 62.22, 26.78°)
OKLab	oklab(51.58% 0.1631 0.065)
OKLCH	oklch(51.58% 0.176 21.7)
XYZ	xyz(21.0843, 12.0741, 4.8340)
Luminance	0.1207 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B72B37 #2BB7AB

analogous

#B72B7D #B72B37 #B7652B

triadic

#B72B37 #37B72B #2B37B7

tetradic

#B72B37 #7DB72B #2BB7AB #652BB7

square

#B72B37 #7DB72B #2BB7AB #652BB7

split-complementary

#B72B37 #2BB765 #2B7DB7

monochromatic

#541419 #851F28 #B72B37 #D54B56 #E07C85

Accessibility & contrast

On white

6.15

#B72B37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#B72B37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B72B37

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B72B37	#FFFFFF	#000000	##FFFFFF
##B72B37	1.00	6.15	3.41	6.15
#FFFFFF	6.15	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544E36

Deuteranopia (green-blind)

#776C32

Tritanopia (blue-blind)

#C90031

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b72b37;
/* rgb */ color: rgb(183, 43, 55);
/* oklch */ color: oklch(51.6% 0.176 21.7);

Tailwind

colors: {
  custom: {
    50: '#d5716d',
    500: '#b72b37',
    950: '#000000',
  },
}

SCSS

$custom: #b72b37;
$custom-light: #d5716d;
$custom-dark: #000000;

JSON

{
  "hex": "#b72b37",
  "rgb": {
    "r": 183,
    "g": 43,
    "b": 55
  },
  "hsl": {
    "h": 354.857,
    "s": 61.947,
    "l": 44.314
  },
  "oklch": {
    "l": 0.51583,
    "c": 0.1756,
    "h": 21.7
  },
  "luminance": 0.12071
}

Semantic roles & 50–950 ramp

primary

#B72B37

secondary

#75C9C1

accent

#E5D743

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160807

muted

#847B7A

Preview Lab

Preview with #B72B37

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

Preview Lab → · Contrast checker → · Palette generator →