#B73631#B73631

#B73631 is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.5% C 0.166 H 26.8°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#B73631
RGB	rgb(183, 54, 49)
HSL	hsl(2, 58%, 45%)
HSV	hsv(2, 73%, 72%)
CMYK	cmyk(0%, 70.5%, 73.2%, 28.2%)
CIE-LAB	lab(42.66, 51.36, 33.17)
CIE-LCH	lch(42.66, 61.14, 32.85°)
OKLab	oklab(52.54% 0.1486 0.0751)
OKLCH	oklch(52.54% 0.166 26.8)
XYZ	xyz(21.4044, 12.9306, 4.2739)
Luminance	0.1293 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73631 #31B2B7

analogous

#B7316F #B73631 #B77931

triadic

#B73631 #31B736 #3631B7

tetradic

#B73631 #6FB731 #31B2B7 #7931B7

square

#B73631 #6FB731 #31B2B7 #7931B7

split-complementary

#B73631 #31B779 #316FB7

monochromatic

#561A17 #872824 #B73631 #D15954 #DE8884

Accessibility & contrast

On white

5.86

#B73631 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#B73631 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73631

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73631	#FFFFFF	#000000	##FFFFFF
##B73631	1.00	5.86	3.59	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B532F

Deuteranopia (green-blind)

#7B6F2D

Tritanopia (blue-blind)

#C90636

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b73631;
/* rgb */ color: rgb(183, 54, 49);
/* oklch */ color: oklch(52.5% 0.166 26.8);

Tailwind

colors: {
  custom: {
    50: '#d57569',
    500: '#b73631',
    950: '#000000',
  },
}

SCSS

$custom: #b73631;
$custom-light: #d57569;
$custom-dark: #000000;

JSON

{
  "hex": "#b73631",
  "rgb": {
    "r": 183,
    "g": 54,
    "b": 49
  },
  "hsl": {
    "h": 2.239,
    "s": 57.759,
    "l": 45.49
  },
  "oklch": {
    "l": 0.52543,
    "c": 0.16647,
    "h": 26.8
  },
  "luminance": 0.12927
}

Semantic roles & 50–950 ramp

primary

#B73631

secondary

#7CC5C8

accent

#DBE147

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B73631

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

Preview Lab → · Contrast checker → · Palette generator →